This reverts commit 67ef3f67.

Reason for revert: might have broken GCE/ccompute fleet.

Original change's description:
> gclient: delete unversioned directory before adding cipd dep for the same path
> 
> Bug: 882611
> Change-Id: I46e41cc9693b90874b5d6569a12ec638eaac1050
> Reviewed-on: https://chromium-review.googlesource.com/1228655
> Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
> Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>

TBR=tandrii@chromium.org,ehmaldonado@chromium.org

Change-Id: Ia2172b1b0d236357edf93dacf57f3bf7d80d5968
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 882611
Reviewed-on: https://chromium-review.googlesource.com/1231699Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>