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
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1-var2