Drop rules for /data/misc/adb legacy type.

This should be obsoleted by the restorecon in
I30e4d2a1ae223a03eadee58a883c79932fff59fe .

Change-Id: Iaeacb1b720b4ac754c6b9baa114535adc1494df2
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

adbd.te

@@ -58,10 +58,6 @@ binder_call(adbd, surfaceflinger)
 allow adbd adb_keys_file:dir search;
 allow adbd adb_keys_file:file r_file_perms;
 
-# Allow access in case /data/misc/adb still has the old type.
-allow adbd system_data_file:dir search;
-allow adbd system_data_file:file r_file_perms;
-
 # ndk-gdb invokes adb forward to forward the gdbserver socket.
 allow adbd app_data_file:dir search;
 allow adbd app_data_file:sock_file write;