Don't verify tls host when profiling https+insecure://host/port/...,
as per discussion in https://go-review.googlesource.com/#/c/20885/.

Fixes: #11468

Change-Id: Ibfc236e5442a00339334602a4014e017c62d9e7a
Reviewed-on: https://go-review.googlesource.com/33157Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>