Remove...

Remove dummy_type_meant_to_prevent_selinux_compilation_from_failing_when_system_ext_public_dir_has_nothing_but_attributes

Fixes:
SELinux: The following public types were found added to the policy
without an entry into the compatibility mapping file(s) found in
private/compat/V.v/V.v[.ignore].cil, where V.v is the latest API level.
dummy_type_meant_to_prevent_selinux_compilation_from_failing_when_system_ext_public_dir_has_nothing_but_attributes

Change-Id: I3e6caceda9b75882b47c7ceea030c7535bafea5f