Revert "[analyzer] Disable diagnostic checking on the buildbot."

This reverts commit befc0f648c83f65e1f3567f2058c7c18b4bc3ad8 now that
plist-html diagnostics are working again.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162966 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed