mediacodec: remove non-Treble allows

Since mediacodec system services have been entirely deleted.

Bug: 80317992
Test: TH
Change-Id: I20aa48ef57474df000279a487f6b077790d273c1
diff --git a/vendor/mediacodec.te b/vendor/mediacodec.te
index 29e1a90..73467c9 100644
--- a/vendor/mediacodec.te
+++ b/vendor/mediacodec.te
@@ -3,15 +3,6 @@
 
 init_daemon_domain(mediacodec)
 
-not_full_treble(`
-    # on legacy devices, continue to allow /dev/binder traffic
-    binder_use(mediacodec)
-    binder_service(mediacodec)
-    add_service(mediacodec, mediacodec_service)
-    allow mediacodec mediametrics_service:service_manager find;
-    allow mediacodec surfaceflinger_service:service_manager find;
-')
-
 # can route /dev/binder traffic to /dev/vndbinder
 vndbinder_use(mediacodec)