Remove UsageStats post-OTA package update filter

Filtering packages for boot-time post-OTA update with
UsageStatsManager idleness API is too aggressive and leaves out even
apps used heavily in the foreground. Remove for now.

Bug: 27902702
Bug: 28161327

Change-Id: I7912f9ad5d8c6206c19068a76383e370d24818db
1 file changed