Remove some no longer used compaction variables

Test: am compact file <processname> <uid>
Bug: 265473345
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:7000b175d9f173d2296bf955f6031c673b5e38b5)
Merged-In: Ifb4e69857b7a0a2ef0d9d40b05de377b5be2788b
Change-Id: Ifb4e69857b7a0a2ef0d9d40b05de377b5be2788b