Remove unused YTRequest from VideoController.
Remove unused YTRequest from VideoController.

The idea was the request will fetch new video streams in case the
previous one became invalid. The problem is I don't have any indication
this can actually happen. Also the code can't be tested properly so
remove it.

Signed-off-by: Peter Tworek <45f11722e542fe61db2d07ffa14ae9c3e4cb552a@gmail.com>

RobertMe/sailfish-ytplayer,tworaz/sailfish-ytplayer,tworaz/sailfish-ytplayer,RobertMe/sailfish-ytplayer,tworaz/sailfish-ytplayer,tworaz/sailfish-ytplayer,RobertMe/sailfish-ytplayer,RobertMe/sailfish-ytplayer,RobertMe/sailfish-ytplayer,tworaz/sailfish-ytplayer