Revert "Check and `speed` compile System UI on boot."

This reverts commit 5f87a0e4.

Reason for revert: Caused boot time and memory usage regressions. Will fix and reland later.
Bug: 227310505
Bug: 231765621
Bug: 231529643

Change-Id: I25975adf70e87e79601df7565be6980de80343ac