forceStdVendor was a special-case mechanism to allow Go contributors
to use vendored dependencies by default when working in GOROOT/src.
As of Go 1.14,¹ the 'go' command uses vendored dependencies by default
within all modules, so the 'std' and 'cmd' modules no longer need to
be special cases, and we can remove this special-case code.
¹ https://golang.org/doc/go1.14#vendor
Updates #33848
Updates #30241
Change-Id: Ib2fb5841c253113b17fa86a086ce85a22ac3d121
Reviewed-on: https://go-review.googlesource.com/c/go/+/251159
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> Reviewed-by: Michael Matloob <matloob@golang.org>