This reverts commit 88d7869d.

Reason for revert: Broke luci-go-presubmit. luci-go development has stopped. https://ci.chromium.org/p/infra/builders/try/luci-go-try-presubmit

Original change's description:
> Reland "depot_tools: Add httplib2 to .vpython"
> 
> This is a reland of e1410883
> 
> Use vpython to execute git_cl.py, gerrit_util.py and presubmit_support.py on recipes.
> 
> Original change's description:
> > depot_tools: Add httplib2 to .vpython
> >
> > Check that things won't break before further changes are made.
> >
> > Bug: 1002153
> > Change-Id: I41866f26334bf9ec2732bc0f25007234a95130e4
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1854749
> > Auto-Submit: Edward Lesmes <ehmaldonado@chromium.org>
> > Commit-Queue: Andrii Shyshkalov <tandrii@google.com>
> > Reviewed-by: Andrii Shyshkalov <tandrii@google.com>
> 
> Bug: 1002153
> Recipe-Nontrivial-Roll: build
> Recipe-Nontrivial-Roll: chromiumos
> Recipe-Nontrivial-Roll: infra
> Recipe-Nontrivial-Roll: skia
> Recipe-Nontrivial-Roll: build_limited_scripts_slave
> Recipe-Nontrivial-Roll: release_scripts
> Change-Id: Id94057eae8830dec197257df3ea35c0c4ff946b7
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1856650
> Reviewed-by: Andrii Shyshkalov <tandrii@google.com>
> Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>

TBR=tandrii@google.com,ehmaldonado@chromium.org,apolito@google.com

Change-Id: Ieecf0bf9164a14542a70ee6343763781a098a4a8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1002153
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1858280Reviewed-by: Nodir Turakulov <nodir@chromium.org>
Commit-Queue: Nodir Turakulov <nodir@chromium.org>