cmd/compile/internal/walk: delete unused statement
Change-Id: I3f118c868b13ec51b2e501424b35564929eed56d
GitHub-Last-Rev:
d15ae124c582417cd10bceaef0b5c0ebbf100f7e
GitHub-Pull-Request: golang/go#45816
Reviewed-on: https://go-review.googlesource.com/c/go/+/314570
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>