Cleanup: Remove deprecated 'me' endpoints after grace period #242
Description
Reminder to remove the deprecated 'me' endpoints after the grace period ends.
See #241 for the full refactoring details.
This includes removing:
- Old scattered endpoints (
audiobooks.me,tracks.me,playlists.me) - Deprecated methods on the main Me class
Timeline: 3 months after deprecation (to be discussed in #241)