The endpoint iterated over `files.vl_basic` (a string, not parsed CSV),
causing it to loop over individual characters. The body contained only
`pass` with TODO comments and no running stats logic. Removed the
endpoint entirely along with the dead commented-out csv helper code.
The `BattingFiles` model is retained as it is still used by
`live_update_pitching`.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>