Revert "Apply strict SELinux checking of PROT_EXEC on mmap/mprotect calls."

This reverts commit 0ad86b4ec9818a2665d06d97039702bc266ca386.

Change-Id: I6411db374dd6194844b3d53c652857aa59675e47
Merge remote-tracking branch 'pac/pac-4.4' into pac-4.4