Per https://android-review.googlesource.com/185392 , ctl.* properties
are not represented as files in the filesystem. So there's no need
to grant read access to them, since it's pointless.

Remove core_property_type from these properties, which has the net
effect of removing read access to these non-existent files.

Change-Id: Ic1ca574668a3511c335a7036a2bb7993ff02c1e3