Help users avoid incorrect expectations of stability, and
help us avoid incurring needless maintenance overhead.

For golang/go#51867.
Fixes golang/go#36505.

Change-Id: I78377711ff2d5441bcdc4186dc8708167cf1a952
Reviewed-on: https://go-review.googlesource.com/c/build/+/394514
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>

The version package and inner commands are long since deprecated,
having been replaced by the equivalent golang.org/dl/... packages.

Go 1.10 and 1.9 are not supported according to release policy,
so no one should be depending these by now. Delete them.

For golang/go#51867.

Change-Id: If4e89673b600e1fd0cfd50a117c95232d1d6a663
Reviewed-on: https://go-review.googlesource.com/c/build/+/394515
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>

The CRFS project has long since moved, and no one is looking
for it in x/build by now. Remove its directory.

For golang/go#51867.

Change-Id: I91a6b6614d284fbf731d71641870ae2dcb55c67c
Reviewed-on: https://go-review.googlesource.com/c/build/+/394516
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>

This command exists for debugging only, and
has probably outlived its usefulness by now.

For golang/go#51867.

Change-Id: Ibe87108b9b6e66092ffe7e997be084c9fd1150c3
Reviewed-on: https://go-review.googlesource.com/c/build/+/394519
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>

We haven't used this code in many years. Remove it as unused.
If a specific need comes up, we can get it back from history.
Doing that isn't much harder compared to figuring out how to
use it after all those years.

For golang/go#51867.
Fixes golang/go#34259.
Fixes golang/go#27632.

Change-Id: Icda2c077fd10c48812e2e59b8d19386abd7f9357
Reviewed-on: https://go-review.googlesource.com/c/build/+/394517
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>

From information available to me, this command isn't actively used now.
It was created in 2015 to help find CLs that need attention, but by
now there are newer processes (e.g., gopherbot assigning reviewers,
the go.dev/s/needs-review link, the dev.golang.org/reviews page) that
contribute to it being obsolete. Its last meaningful change was in 2016
just to keep it working with Go 1.8.

Having this checked in in x/build implies that it's supported, but that
doesn't appear to be the case. If we did want to keep it supported and
invest more effort into it, it would be better to share more code with
an equivalent web view at https://dev.golang.org/reviews rather than
have two very similar implementations with subtly different logic.

Its code remains available in history if it becomes needed again,
but it's not meeting the bar to stay checked in to x/build.

For golang/go#51867.

Change-Id: I6241bd38d8e828d28a2c31a26bf2d4794c87cf51
Reviewed-on: https://go-review.googlesource.com/c/build/+/394518
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>

This function was actively used a few years ago, but by now it's not
serving any purpose. If it (or a modified version thereof) becomes
needed again, it's easy to re-add. In the meantime, delete its code
to reduce x/build maintenance costs slightly.

For golang/go#51867.

Change-Id: I4962cc5a6384541ca4f38003565b2cdc218c0c51
Reviewed-on: https://go-review.googlesource.com/c/build/+/396477
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>