TimedMediaHandler: Drop no-longer-needed dependency on MwEmbedHandler
TimedMediaHandler: Drop no-longer-needed dependency on MwEmbedHandler

Not needed since I759ff29fdda0d9477098d45e868b35037e4eb72d.

Change-Id: Id7c6bb7c8f614090c5fbad310952ff5e974099dc

wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant