all: delete obsolete // +build lines

Many of the modules in x/exp say go 1.18 or newer in their go.mod files.
Use go fix remove the // +build lines that have become obsolete by that
Go version. See https://go.dev/doc/go1.18#go-build-lines.

Change-Id: I9ec877d72ece76ce8ec2d4a368450db6ebda6d12
Reviewed-on: https://go-review.googlesource.com/c/exp/+/516676
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>

cmd/macos-roots-test/main.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 // Command macOS-roots-test runs crypto/x509.TestSystemRoots as a
 // stand-alone binary for crowdsourced testing.

cmd/macos-roots-test/root_nocgo_darwin.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !cgo
-// +build !cgo
 
 package main
 

event/adapter/gokit/gokit_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 package gokit_test
 

event/adapter/logr/logr_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 package logr_test
 

event/adapter/logrus/logrus.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 // Package logrus provides a logrus Formatter for events.
 // To use for the global logger:

event/adapter/logrus/logrus_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 package logrus_test
 

event/adapter/zap/zap.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 // zap provides an implementation of zapcore.Core for events.
 // To use globally:

event/adapter/zap/zap_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 package zap_test
 

event/alloc_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !race
-// +build !race
 
 package event_test
 

event/disabled.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build disable_events
-// +build disable_events
 
 package event
 

event/event_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 package event_test
 

event/export.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 package event
 

event/otel/trace_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 package otel_test
 

event/severity/severity_test.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 package severity_test
 

event/source.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !disable_events
-// +build !disable_events
 
 package event
 

io/i2c/devfs.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package i2c
 

io/i2c/devfs_nonlinux.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux
-// +build !linux
 
 package i2c
 

io/spi/devfs.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux
-// +build linux
 
 package spi
 

io/spi/devfs_nonlinux.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux
-// +build !linux
 
 package spi
 

mmap/manual_test_program.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
-// +build ignore
 
 //
 // This build tag means that "go build" does not build this file. Use "go run

mmap/mmap_other.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !linux && !windows && !darwin
-// +build !linux,!windows,!darwin
 
 // Package mmap provides a way to memory-map a file.
 package mmap

mmap/mmap_unix.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build linux || darwin
-// +build linux darwin
 
 // Package mmap provides a way to memory-map a file.
 package mmap

shiny/driver/driver_darwin.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin && !metal
-// +build darwin,!metal
 
 package driver
 

shiny/driver/driver_fallback.go

@@ -3,11 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !darwin && (!linux || android) && !windows && !dragonfly && !openbsd
-// +build !darwin
-// +build !linux android
-// +build !windows
-// +build !dragonfly
-// +build !openbsd
 
 package driver
 

shiny/driver/driver_x11.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build (linux && !android) || dragonfly || openbsd
-// +build linux,!android dragonfly openbsd
 
 package driver
 

shiny/driver/gldriver/cocoa.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin && !ios
-// +build darwin,!ios
 
 package gldriver
 

shiny/driver/gldriver/context.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !android
-// +build !android
 
 package gldriver
 

shiny/driver/gldriver/other.go

@@ -3,10 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build (!darwin || ios || !cgo) && (!linux || android || !cgo) && (!openbsd || !cgo) && !windows
-// +build !darwin ios !cgo
-// +build !linux android !cgo
-// +build !openbsd !cgo
-// +build !windows
 
 package gldriver
 

shiny/driver/gldriver/win32.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package gldriver
 

shiny/driver/gldriver/x11.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build (linux && !android) || openbsd
-// +build linux,!android openbsd
 
 package gldriver
 

shiny/driver/internal/swizzle/swizzle_other.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !amd64
-// +build !amd64
 
 package swizzle
 

shiny/driver/internal/win32/key.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package win32
 

shiny/driver/internal/win32/win32.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 // Package win32 implements a partial shiny screen driver using the Win32 API.
 // It provides window, lifecycle, key, and mouse management, but no drawing.

shiny/driver/internal/x11key/gen.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
-// +build ignore
 
 // This program generates the table keysymCodePoints from /usr/include/X11/keysymdef.h
 package main

shiny/driver/mtldriver/buffer.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 package mtldriver
 

shiny/driver/mtldriver/internal/appkit/appkit.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 // Package appkit provides access to Apple's AppKit API
 // (https://developer.apple.com/documentation/appkit).

shiny/driver/mtldriver/internal/coreanim/coreanim.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 // Package coreanim provides access to Apple's Core Animation API
 // (https://developer.apple.com/documentation/quartzcore).

shiny/driver/mtldriver/mtldriver.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 // Package mtldriver provides a Metal driver for accessing a screen.
 //

shiny/driver/mtldriver/screen.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 package mtldriver
 

shiny/driver/mtldriver/texture.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 package mtldriver
 

shiny/driver/mtldriver/window.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin
-// +build darwin
 
 package mtldriver
 

shiny/driver/mtldriver_darwin.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build darwin && metal
-// +build darwin,metal
 
 package driver
 

shiny/driver/windriver/buffer.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package windriver
 

shiny/driver/windriver/other.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !windows
-// +build !windows
 
 package windriver
 

shiny/driver/windriver/screen.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package windriver
 

shiny/driver/windriver/texture.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package windriver
 

shiny/driver/windriver/window.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package windriver
 

shiny/driver/windriver/windraw.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package windriver
 

shiny/driver/windriver/windriver.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build windows
-// +build windows
 
 package windriver