Remove unneeded condition

The publisher peer connection when the HPB is used is a sender only
connection, so it never adds or removes a remote stream.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

app/src/main/java/com/nextcloud/talk/webrtc/PeerConnectionWrapper.java

@@ -477,9 +477,7 @@ public class PeerConnectionWrapper {
 
         @Override
         public void onRemoveStream(MediaStream mediaStream) {
-            if (!isMCUPublisher) {
-                EventBus.getDefault().post(new MediaStreamEvent(null, sessionId, videoStreamType));
-            }
+            EventBus.getDefault().post(new MediaStreamEvent(null, sessionId, videoStreamType));
         }
 
         @Override