Revert "security: selinux: Add Per-File-Encryption hooks"

This commit is causing issues with the external sdcard on the find7 after a fresh data wipe..

This reverts commit 36abd239ddbcf7f3f7f33a739dd2072b920c6222.

Change-Id: I1d1072be1f7356b1de57ac77c83ca9035dd02119