vet: remove special check for package comment; staticcheck has it

vet.sh

@@ -178,35 +178,4 @@ Target is deprecated: Use the Target field in the BuildOptions instead.
 xxx_messageInfo_
 ' "${SC_OUT}"
 
-# - special golint on package comments.
-lint_package_comment_per_package() {
-  # Number of files in this go package.
-  fileCount=$(go list -f '{{len .GoFiles}}' $1)
-  if [ ${fileCount} -eq 0 ]; then
-    return 0
-  fi
-  # Number of package errors generated by golint.
-  lintPackageCommentErrorsCount=$(golint --min_confidence 0 $1 | grep -c "should have a package comment")
-  # golint complains about every file that's missing the package comment. If the
-  # number of files for this package is greater than the number of errors, there's
-  # at least one file with package comment, good. Otherwise, fail.
-  if [ ${fileCount} -le ${lintPackageCommentErrorsCount} ]; then
-    echo "Package $1 (with ${fileCount} files) is missing package comment"
-    return 1
-  fi
-}
-lint_package_comment() {
-  set +ex
-
-  count=0
-  for i in $(go list ./...); do
-    lint_package_comment_per_package "$i"
-    ((count += $?))
-  done
-
-  set -ex
-  return $count
-}
-lint_package_comment
-
 echo SUCCESS