Revert "patches: temporarily only apply clean-tvshows patch to Helix."

This reverts commit 56c1bcbdfe8a4d46e09255a3ccab17e627aedf6b.
patches: remove no longer needed clean-tvshows patch.

Patch has been upstreamed for Helix/master and apparently it doesn't affect
Gotham.  Also, on Gotham it's actually breaking library cleaning.