cmd/dist: drop wasitest from special list
CL 498255 made runtime/internal/wasitest compatible with all platforms
so that "go test std" works again. This means it no longer has to be
in the special dist test list.
While we're here explain the purpose of this list better and implore
people to please not expand it, since almost any addition is a sign
that "go test std cmd" no longer works.
Change-Id: I31c7fb767787fa587f65c2697aed9ed43e95fb18
Reviewed-on: https://go-review.googlesource.com/c/go/+/498256
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Austin Clements <austin@google.com>