Revert "Suppress -fcoroutines-ts deprecation warning"

Revert submission 2446165-update-clang-r487747

Reason for revert: DroidMonitor-triggered revert due to breakage bug b/271252582 and b/271243811

Reverted changes: /q/submissionid:2446165-update-clang-r487747

Bug: 271252582
Bug: 271243811
Change-Id: Ib2f5cafe2bcb0375bfd4a7933419995a6737b86e
1 file changed