Use SELinux rules from private instead of tangorpro for MediaDrm plugin

* Private mediadrm: ag/29478046, ag/29547376
* MediaDrm SELinux rules are on ag/29567026

Bug: 367906184
Bug: 366426322
Flag: EXEMPT castauth enabled
Test: b/364190751#comment27
Change-Id: If98279ba8b6310206971069d064831fa5f053515

vendor/file.te

@@ -1,8 +1,5 @@
 #Pogo USB control & status
 type sysfs_pogo_usb, sysfs_type, fs_type;
 
-# Cast device certificate
-type device_cert_file, file_type, vendor_persist_type;
-
 # Avoid GPS se failed
 type sysfs_gps, sysfs_type, fs_type;

vendor/file_contexts

@@ -9,7 +9,3 @@
 
 # Privacy LED
 /vendor/bin/hw/android\.hardware\.lights-service\.tangorpro          u:object_r:hal_light_default_exec:s0
-
-# Cast Factory Credentials
-/vendor/bin/hw/android\.hardware\.drm-service\.castkey u:object_r:hal_drm_cast_exec:s0
-/mnt/vendor/persist/nest/cast_auth\.crt                u:object_r:device_cert_file:s0

vendor/hal_drm_cast.te

@@ -1,9 +0,0 @@
-type hal_drm_cast, domain;
-type hal_drm_cast_exec, exec_type, vendor_file_type, file_type;
-
-init_daemon_domain(hal_drm_cast)
-hal_server_domain(hal_drm_cast, hal_drm)
-
-allow hal_drm_cast mnt_vendor_file:dir search;
-allow hal_drm_cast persist_file:dir search;
-allow hal_drm_cast device_cert_file:file r_file_perms;

vendor/service_contexts

@@ -1,2 +0,0 @@
-# Cast Factory Credentials
-android.hardware.drm.IDrmFactory/castkey                         u:object_r:hal_drm_service:s0