Revert "Modify usagestats event processing thread"

This reverts commit 66c56a0c7a78e385ec55a77cb8741e841b4fb8f5.

Reason for revert: boot time regression

Bug: 303555768
Change-Id: Id5b1c8be0575324f929b9d6f3b77606c1167caf1
2 files changed