Revert of Add parent_git_number into the triggered build properties (https://codereview.chromium.org/459143002/)
Revert of Add parent_git_number into the triggered build properties (https://codereview.chromium.org/459143002/)

Reason for revert:
Speculative revert for the win tester breakage.

Original issue's description:
> Add parent_git_number into the triggered build properties
> 
> BUG=401522,399644
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=288772

TBR=iannucci@chromium.org,smut@google.com
NOTREECHECKS=true
NOTRY=true
BUG=401522,399644

Review URL: https://codereview.chromium.org/464843002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@288928 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build