Revert "Revert "Clear BPF data in KernelCpuUidTimeReader.removeUid()""
This reverts commit 0648bad1.
Reason for revert: commit 0208449c ("Defer UID data removal until after reading is finished") has now been merged to remove the deadlock that required reverting.
Bug: 177011744
Bug: 174739872
Change-Id: I4fc120dc4410e21327700cb62900b3991ec981ec