VID-2123 If video is local, avoid making an api call to database, duh...

RFCR @garthwebb 

The api call to retrieve local video details failed. Switching to local call fixes it
https://wikia-inc.atlassian.net/browse/VID-2123
This whole ```if``` block can be removed.  Just use ```F::app()->wg->WikiaVideoRepoDBName``` below.