playback: don't ask user if s/he would like to create a bug report during playback as a shaky environment will trigger the dialog too frequently

AspenProject/VLCMovieViewController.m

@@ -510,13 +510,6 @@
     return YES;
 }
 
-
-- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
-{
-    if (motion == UIEventSubtypeMotionShake)
-        [[VLCBugreporter sharedInstance] handleBugreportRequest];
-}
-
 - (void)remoteControlReceivedWithEvent:(UIEvent *)event
 {
     switch (event.subtype) {