misc/git: remove excessively verbose lint tools

misc/git/pre-commit

@@ -18,21 +18,6 @@ gosimple $(go list ./... | grep -v /vendor/)
 echo "<<< gosimple"
 echo
 
-echo ">>> staticcheck"
-staticcheck $(go list ./... | grep -v /vendor/)
-echo "<<< staticcheck"
-echo
-
-echo ">>> unused"
-unused $(go list ./... | grep -v /vendor/)
-echo "<<< unused"
-echo
-
-echo ">>> gas"
-gas $(find . -name "*.go" | grep -v /vendor/ | grep -v '_test.go$')
-echo "<<< gas"
-echo
-
 # Check for gofmt problems and report if any.
 gofiles=$(git diff --cached --name-only --diff-filter=ACM | grep '.go$' | grep -v /vendor/)
 [ -z "$gofiles" ] && echo "EXIT $vetres" && exit $vetres