remove /dev/log

This was marked deprecated in 2014 and removed in 2015, let's remove
the sepolicy now too.

Test: see that logging still works on bullhead

Change-Id: I4caa0dbf77956fcbc61a07897242b951c275b502

private/file_contexts

@@ -91,7 +91,6 @@
 /dev/ion		u:object_r:ion_device:s0
 /dev/keychord   u:object_r:keychord_device:s0
 /dev/kmem		u:object_r:kmem_device:s0
-/dev/log(/.*)?		u:object_r:log_device:s0
 /dev/loop-control	u:object_r:loop_control_device:s0
 /dev/mem		u:object_r:kmem_device:s0
 /dev/modem.*		u:object_r:radio_device:s0

public/device.te

@@ -30,7 +30,6 @@ type hw_random_device, dev_type;
 type input_device, dev_type;
 type kmem_device, dev_type;
 type port_device, dev_type;
-type log_device, dev_type, mlstrustedobject;
 type mtd_device, dev_type;
 type mtp_device, dev_type, mlstrustedobject;
 type nfc_device, dev_type;