How do I delete just video portion of track in FCPX
I need to delete just the video portion of a track in FCPX. Even if I only edit audio and then expand out the clips to have sound under the audio only portion there is what appears to be gap/slug/black in the video portion of the track, and I can't connect the video portion of the two other tracks without black in between from what is supposed to be audio only.
I'm trying to just delete the top part of the green track which is supposed to audio only.
Final Cut Pro X, OS X Yosemite (10.10.3)