misc/wasm: drop wasmtime < 14 support

For Go 1.23, we decided to no longer support the old CLI interface
exposed by wasmtime. This removes the extra logic included to support
both the new and the old CLI interface. Now only versions of wasmtime
14 and newer are supported.

Fixes #63718

Change-Id: Iea31388dc41bc8d73caa923c7e4acae2228bf515
Reviewed-on: https://go-review.googlesource.com/c/go/+/577135
Reviewed-by: Randy Reddig <randy.reddig@fastly.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>

doc/next/7-ports.md

@@ -6,3 +6,9 @@
 As [announced](go1.22#darwin) in the Go 1.22 release notes,
 Go 1.23 requires macOS 11 Big Sur or later;
 support for previous versions has been discontinued.
+
+### Wasm {#wasm}
+
+<!-- go.dev/issue/63718 -->
+The `go_wasip1_wasm_exec` script in `GOROOT/misc/wasm` has dropped support
+for versions of `wasmtime` < 14.0.0.

misc/wasm/go_wasip1_wasm_exec

@@ -14,15 +14,7 @@ case "$GOWASIRUNTIME" in
 		exec wazero run -mount /:/ -env-inherit -cachedir "${TMPDIR:-/tmp}"/wazero ${GOWASIRUNTIMEARGS:-} "$1" "${@:2}"
 		;;
 	"wasmtime" | "")
-		# Match the major version in "wasmtime-cli 14.0.0". For versions before 14
-		# we need to use the old CLI. This requires Bash v3.0 and above.
-		# TODO(johanbrandhorst): Remove this condition once 1.22 is released.
-		# From 1.23 onwards we'll only support the new wasmtime CLI.
-		if [[ "$(wasmtime --version)" =~ wasmtime-cli[[:space:]]([0-9]+)\.[0-9]+\.[0-9]+ && "${BASH_REMATCH[1]}" -lt 14 ]]; then
-			exec wasmtime run --dir=/ --env PWD="$PWD" --env PATH="$PATH" --max-wasm-stack 1048576 ${GOWASIRUNTIMEARGS:-} "$1" -- "${@:2}"
-		else
-			exec wasmtime run --dir=/ --env PWD="$PWD" --env PATH="$PATH" -W max-wasm-stack=1048576 ${GOWASIRUNTIMEARGS:-} "$1" "${@:2}"
-		fi
+		exec wasmtime run --dir=/ --env PWD="$PWD" --env PATH="$PATH" -W max-wasm-stack=1048576 ${GOWASIRUNTIMEARGS:-} "$1" "${@:2}"
 		;;
 	*)
 		echo "Unknown Go WASI runtime specified: $GOWASIRUNTIME"