This addresses a bug when we call setup multiple times before its ready [Delivers #83939432]

This is meant to differentiate instances of jwplayer.api which are created here
https://github.com/jwplayer/jwplayer/blob/master/src/js/api/jwplayer.api.js#L124

from those created here
https://github.com/jwplayer/jwplayer/blob/master/src/js/api/jwplayer.api.js#L587 

This an important distinction because the ones created by selectPlayer ought be removed immediately whereas those created by setup() need to wait for onReady. They are also *not* an aborted player, meaning that CSS can safely be removed.