Revert "Revert "Stop dropping caches now we have kernel fix""

This reverts commit 8ad0bef7b5b1b6e1ba3afe441d2dcc9a06e782a7.

Bug: 37231161
Test: Boot device with FBE enabled. ls /storage/emulated/0/Android
Unlock device. ls /storage/emulated/0/Android
1st will not be found. Second should be found.

Change-Id: I92c7ad0adaa7bd357e10661a47cc667ac0ff84b4
1 file changed