Fix error in c5f7ccba49

We still have to delete the Clip's, or else we would just be eating
up memory. But we should first make sure that the Track's no longer
see this Clip in their m_clips vector. This has to happen
as it's own operation because we have to wait for the audio thread(s)
first. This would ensure that Track's do not create
PlayHandle's that would refer to a Clip that is currently
being destroyed. After that, then we call deleteLater on the Clip.

src/gui/clips/ClipView.cpp

@@ -295,11 +295,9 @@ void ClipView::remove()
 	// delete ourself
 	close();
 
-	// Since the Track would own the clip, we don't delete it
 	if (m_clip->getTrack())
 	{
 		m_clip->getTrack()->removeClip(m_clip);
-		return;
 	}
 
 	m_clip->deleteLater();