cmd/go: remove redundant AVX regex in security flag checks
Remove "-m(no-)?avx[0-9a-z]*" from validCompilerFlags in security.go,
because "-m(no-)?avx[0-9a-z.]*" (see line 108) already covers its
matching range.
Change-Id: Ic86a45eefa7639ed3a8cdee95f08021d9515678e
Reviewed-on: https://go-review.googlesource.com/c/go/+/717740 Reviewed-by: Junyang Shao <shaojunyang@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Pratt <mpratt@google.com>