Q: deleting movies in Sync Movies list for my iphone, i do not see the movies on my computer

This is basically an 'add-on' to the post: how do i delete movies in Sync Movies lis… - Apple Community

I too have 'Movies' showing up in my sync list for my iPhone. These are not purchased but rather old home movies. Old as in, I don't have them any more.

When I go to Music -> TV & Movies, this is empty and shows: "You haven't added any TV shows or movies to your Library yet".

So how can I remove these offending files?