Have you tried the “Remove Selected Tracks” option in the “Project” menu (at the top)? Or is that missing too?
Q 1: This is in CB 8 right? You haven’t listed any system specs…
Q 2: Have other projects had had this happen or is this the first time this has happened?
Q 3: When you right click on a track or folder is the “Remove Selected Tracks” menu item there but greyed out or is it missing altogether?
Q 4: Can you delete any of the other tracks or is the option missing from those tracks too?
If the “Remove Selected Tracks” option is missing maybe it is time to try starting in safe mode.
Observation: They look like automation tracks grouped in folder tracks…
Regards 