 Command entry: Track View
Command entry: Track View   Highlight a controller track in the Controller window.
 Highlight a controller track in the Controller window.  Controller menu
 Controller menu  Delete Controller
 Delete Controller
            Some node subcontrollers can be deleted. Visibility tracks, Image Motion Blur Multiplier, Object Motion Blur, and On/Off are examples of controllers that can be deleted. Most controllers, however, are not deletable.
You can also delete a Visibility track by using Tracks  Visibility Tracks
 Visibility Tracks  Remove.
 Remove.