Remove unneeded condition

If the call is a voice only call there will be no received video tracks
(they would have been stopped when each connection is established), so
changing the enabled state has no effect (as the adapter only tries to
show the received video if it is available).

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

app/src/main/java/com/nextcloud/talk/activities/CallActivity.java

@@ -2170,7 +2170,7 @@ public class CallActivity extends CallBaseActivity {
                 participantsAdapter.notifyDataSetChanged();
             }
         } else if (peerConnectionEvent.getPeerConnectionEventType() ==
-            PeerConnectionEvent.PeerConnectionEventType.VIDEO_CHANGE && !isVoiceOnlyCall) {
+            PeerConnectionEvent.PeerConnectionEventType.VIDEO_CHANGE) {
             if (participantDisplayItems.get(participantDisplayItemId) != null) {
                 participantDisplayItems.get(participantDisplayItemId).setStreamEnabled(peerConnectionEvent.getChangeValue());
                 participantsAdapter.notifyDataSetChanged();