Remove Quirk shouldAdvertiseSupportForHLSSubtitleTypes on hulu.com

• Component: Media
• Status: RESOLVED FIXED

[Karl Dubost]

This is to not forget to remove the quirk when this is not necessary anymore. 

Steps to reproduce:

1. With an iPad 
2. Go to to hulu.com
3. Log in
4. Play a video

Result:
Video Error


The Quirk has been created in 
* https://github.com/WebKit/WebKit/pull/12065
* Bug 254605

Recent changes in the AVFoundation framework have caused canPlayType() queries for
`application/vnd.apple.mpegurl; codecs="stpp.ttml.im1t"` and
`application/vnd.apple.mpegurl; codecs="wvtt"` to fail. These were never well-formed
queries in the first place, as `application/vnd.apple.mpegurl` does not take a codecs
parameter. However, Hulu.com appears to depend upon those queries returning "probably"
in order to vend a working HLS stream.

Add a quirk for hulu.com only which hard codes the answer to those two canPlayType()
queries to "probably".

[Radar WebKit Bug Importer]

<rdar://problem/107347115>

[Karl Dubost]

Pull request: https://github.com/WebKit/WebKit/pull/16655

[EWS]

Committed 266925@main (44e22d905dd0): <https://commits.webkit.org/266925@main>

Reviewed commits have been landed. Closing PR #16655 and removing active labels.