Move adbd into enforcing (all build types)

adbd was only in enforcing for user builds. Commit
Ib33c0dd2dd6172035230514ac84fcaed2ecf44d6 allows us to move
it into enforcing for everyone. Do it.

Change-Id: Ie1a3e5361c891d2c9366e11f35699e3146cc3d88
diff --git a/adbd.te b/adbd.te
index 8614819..28fa5e5 100644
--- a/adbd.te
+++ b/adbd.te
@@ -3,7 +3,6 @@
 type adbd, domain;
 
 userdebug_or_eng(`
-  permissive adbd;
   allow adbd su:process dyntransition;
 ')