Revert "Revert "Delete clang-4393122""

This reverts commit 4fdb2a4d22a09147569bae61edab35bccb66c971.

Reason for revert: b/78535188 - this prebuilt can now be removed.

Change-Id: If76560f16e38dea60b7f4460237b4ca631f1865d
2195 files changed