Revert of Run `svn cleanup` before every update and reset.

Revert of Run `svn cleanup` before every update and reset. (https://chromiumcodereview.appspot.com/240503007/)

Reason for revert:
It's inconclusive if this actually helped the bots, so reverting.

Original issue's description:
> Run `svn cleanup` before every update and reset.
> 
> Testing on a bot with an 'unclean' Chromium checkout:
> 
> Unpatched `gclient revert -v -v -v --nohooks --upstream` (unclean checkout)
> real    9m14.280s
> user    0m37.238s
> sys     0m37.738s
> 
> Patched 'gclient revert -v -v -v --nohooks --upstream'  (unclean checkout)
> real    5m50.065s
> user    1m18.889s
> sys     0m57.860s
> 
> ---------------- after patched gclient revert run (cleans the checkout)
> 
> Unpatched 'gclient revert -v -v -v --nohooks --upstream' (clean checkout)
> real    0m21.602s
> user    0m24.966s
> sys     0m13.969s
> 
> Patched 'gclient revert -v -v -v --nohooks --upstream' (clean checkout)
> real    0m27.467s
> user    0m28.382s
> sys     0m22.629s
> 
> BUG=336983
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=264753

TBR=dpranke@chromium.org,iannucci@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=336983
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=265093

[ghost stip (do not use), 2014-04-21 22:16:18]

Created Revert of Run `svn cleanup` before every update and reset.

[commit-bot: I haz the power, 2014-04-21 22:16:29]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/stip@chromium.org/245293003/1

[commit-bot: I haz the power, 2014-04-21 22:18:04]

Change committed as 265093

[Dirk Pranke, 2014-04-21 22:27:52]

lgtm