Remove now unused, broken apple-trailers and vimeo plugins

• The apple-trailers service was moved to an Apple TV application, and the original service does not work anymore.

• Vimeo has been dropped due to the changes of the API and disabling their search function.

Upstream MR (already merged in master):

https://gitlab.gnome.org/GNOME/totem/-/merge_requests/410

Related grilo-plugins changes:

https://gitlab.gnome.org/GNOME/grilo-plugins/-/commit/a3e7373d0ff9cf08fd28de74f42575121a79c52f

https://gitlab.gnome.org/GNOME/grilo-plugins/-/commit/d6d91c7cf27de78b0b0575daeeddb1ae7f69cc94

(The apple-trailers plugin was removed in Debian via berto/grilo-plugins@5963980e, vimeo was already removed before.)

/cc @smcv