Revert "Hack: cron job to clean up tifs from /tmp on app servers"

Bug 55541 has been resolved by applying Tim's patch and repackaging PHP,
so this is no longer needed.

This reverts commit 7082973068429c8f5e1c33139529eebc3cceb6c9.

Change-Id: Ie21dded9384ccac34cae5f796459f46416024c00