Remove git-tree-prune.

Remove git-tree-prune.

PSA [1] has been sent 3 weeks ago. Alternative git cl archive landed 1 week ago.
No comments have been received since then. Also, this tool is not even in
top-level depot_tools, hence outside of $PATH for most people, user impact
should be very limited.

[1] PSA link:
https://groups.google.com/a/chromium.org/d/msg/infra-dev/K2qwUQ-mRUM/nnYcTDD8AQAJ

BUG=616404
R=machenbach@chromium.org

Committed: https://chromium.googlesource.com/chromium/tools/depot_tools/+/461a222aac63e606b022ea25a21a755a444d0e4b

[tandrii(chromium), 2016-06-17 13:23:50]

The CQ bit was checked by tandrii@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-06-17 13:23:57]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2077943003/1

[Michael Achenbach, 2016-06-17 13:24:41]

lgtm

[tandrii(chromium), 2016-06-17 13:24:54]

The CQ bit was unchecked by tandrii@chromium.org

[tandrii(chromium), 2016-06-17 13:24:56]

The CQ bit was checked by tandrii@chromium.org

[commit-bot: I haz the power, 2016-06-17 13:25:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2077943003/1

[commit-bot: I haz the power, 2016-06-17 13:27:54]

Description was changed from

==========
Remove git-tree-prune.

PSA [1] has been sent 3 weeks ago. Alternative git cl archive landed 1 week ago.
No comments have been received since then. Also, this tool is not even in
top-level depot_tools, hence outside of $PATH for most people, user impact
should be very limited.

[1] PSA link:
https://groups.google.com/a/chromium.org/d/msg/infra-dev/K2qwUQ-mRUM/nnYcTDD8...

BUG=616404
R=machenbach@chromium.org
==========

to

==========
Remove git-tree-prune.

PSA [1] has been sent 3 weeks ago. Alternative git cl archive landed 1 week ago.
No comments have been received since then. Also, this tool is not even in
top-level depot_tools, hence outside of $PATH for most people, user impact
should be very limited.

[1] PSA link:
https://groups.google.com/a/chromium.org/d/msg/infra-dev/K2qwUQ-mRUM/nnYcTDD8...

BUG=616404
R=machenbach@chromium.org

Committed:
https://chromium.googlesource.com/chromium/tools/depot_tools/+/461a222aac63e6...
==========

[commit-bot: I haz the power, 2016-06-17 13:27:55]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/tools/depot_tools/+/461a222aac63e6...