Remove the need for a token parameter from AsyncChannel.

By returning the channel object it self it is unnecessary
to have a token. Also, no current code needed it, if its
needed in the future it can be added back.

Change-Id: Ie1d2a1e885f9cd74e95663711ccefb760811bf16

services/java/com/android/server/WifiService.java

@@ -197,7 +197,7 @@ public class WifiService extends IWifiManager.Stub {
         WifiServiceHandler(android.os.Looper looper, Context context) {
             super(looper);
             mWshChannel = new AsyncChannel();
-            mWshChannel.connect(context, this, mWifiStateMachine.getHandler(), 0);
+            mWshChannel.connect(context, this, mWifiStateMachine.getHandler());
         }
 
         @Override