camera_device: remove typealias

Remove the temporary typealias on camera_device since it
is now defunct.

Change-Id: I0a21d019580605695afa0a169aa1fbf0d7533f29

device.te

@@ -100,6 +100,3 @@ type misc_block_device, dev_type;
 
 # Bootctrl block device used by A/B update (update_engine, update_verifier).
 type bootctrl_block_device, dev_type;
-
-# XXX: Temporarily alias camera_device for its removal
-typealias video_device alias camera_device;