[charter-html] Removed webvtt (#127)

Can always be back on the table later if needed
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/charter-html/pull/127

-- Commit Summary --

  * Removed webvtt

-- File Changes --

    M timed-media-wg.html (2)

-- Patch Links --

https://github.com/w3c/charter-html/pull/127.patch
https://github.com/w3c/charter-html/pull/127.diff

---
Reply to this email directly or view it on GitHub:
https://github.com/w3c/charter-html/pull/127