[streams] Remove closedPromise from ReadableStream's internal slot list (#352)

It no longer a part of the stream but lives in the reader class.
You can view, comment on, or merge this pull request online at:

  https://github.com/whatwg/streams/pull/352

-- Commit Summary --

  * Remove closedPromise from ReadableStream's internal slot list

-- File Changes --

    M index.bs (4)

-- Patch Links --

https://github.com/whatwg/streams/pull/352.patch
https://github.com/whatwg/streams/pull/352.diff

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/streams/pull/352