[Thread] remove NET_RAW from threadnetwork.rc

We don't need NET_RAW for the OT daemon

Change-Id: I46e414a701a178bbe245fa95211f88294d1672a3
diff --git a/apex/threadnetwork.rc b/apex/threadnetwork.rc
index 8434c8a..8fc41e1 100644
--- a/apex/threadnetwork.rc
+++ b/apex/threadnetwork.rc
@@ -15,7 +15,6 @@
 service ot-daemon /apex/com.android.threadnetwork/bin/ot-daemon -I thread-wpan threadnetwork_hal://binder?none
     disabled
     updatable
-    capabilities NET_RAW
     class main
     user thread_network
     group thread_network inet system