Revert "ConnectivityManager: allow usage of TYPE_NONE"

This CL is breaking some internal builds.

This reverts commit 0b7642a820.

Change-Id: Ie79214808d84c73f54a525f515b4c90a3fb23542

services/core/java/com/android/server/ConnectivityService.java

@@ -3908,9 +3908,6 @@ public class ConnectivityService extends IConnectivityManager.Stub
     public void setProvisioningNotificationVisible(boolean visible, int networkType,
             String action) {
         enforceConnectivityInternalPermission();
-        if (!ConnectivityManager.isNetworkTypeValid(networkType)) {
-            return;
-        }
         final long ident = Binder.clearCallingIdentity();
         try {
             // Concatenate the range of types onto the range of NetIDs.