Revert "Fix fstab and init.mako.rc on non SELinux builds"

This reverts commit 85f1f061056dd4d18bca32a3d7e7aa67dfba3df4.
selinux: Fix access to camera socket

Ignoring the error isn't enough, the qcamera-daemon will fail
if it can't remove a pre-existing socket, so let that happen

Change-Id: Ie9d8d58a5c4903a1d25e82ddb3295485a57b85ae