Revert "Fix the ART Buildbots using the master-art manifest."

Reverting as repo syncing later won't work, as this symlink is an untracked file.

Bug: 26051370
This reverts commit f1389288c6f642e16b5d9a06ef43f982dfeeb30d.

Change-Id: Idd41955710b4d3d5809e4f6bf963ed3a4cead126
1 file changed