Revert "Issue #2831944 by chr.fritsch, phenaproxima, marcoscano, seanB,...

Revert "Issue #2831944 by chr.fritsch, phenaproxima, marcoscano, seanB, slashrsm, robpowell, alexpott, samuel.mortenson, dawehner, tstoeckler, Wim Leers, Gábor Hojtsy, martin107, aheimlich, idebr, tedbow, larowlan, ckrina, mtodor, bkosborne: Implement media source plugin for remote video via oEmbed"

This reverts commit 8f6fcbdd.