[media-and-entertainment] new commits pushed by chrisn

The following commits were just pushed by chrisn to https://github.com/w3c/media-and-entertainment:

* Edited app development charter to remove duplicate text
  by Chris Needham
https://github.com/w3c/media-and-entertainment/commit/242aa244ec2213a8c3ad8b884f668392994aa7ac



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