Revert "Update addidtions file for unicode 12.1."

This reverts commit 0702b833ca7c0ef5b0c93da919dcd62bc0a8cbc3.

Reason for revert: <INSERT REASONING HERE>

Change-Id: Ic7a2e953cab8eef6407e40d424d3b42f616941e2
1 file changed