Stop allowing CORS for the JSON-RPC server
Stop allowing CORS for the JSON-RPC server

As far as I can tell, there is no need to allow this, and doing so poses severe security risks (see #3374).
fujicoin/electrum-fjc,vialectrum/vialectrum,vialectrum/vialectrum,romanz/electrum,wakiyamap/electrum-mona,cryptapus/electrum,kyuupichan/electrum,romanz/electrum,neocogent/electrum,wakiyamap/electrum-mona,cryptapus/electrum,spesmilo/electrum,spesmilo/electrum,asfin/electrum,spesmilo/electrum,fujicoin/electrum-fjc,asfin/electrum,wakiyamap/electrum-mona,neocogent/electrum,kyuupichan/electrum,pooler/electrum-ltc,pooler/electrum-ltc,spesmilo/electrum,wakiyamap/electrum-mona,pooler/electrum-ltc,cryptapus/electrum,asfin/electrum,neocogent/electrum,kyuupichan/electrum,fujicoin/electrum-fjc,romanz/electrum,vialectrum/vialectrum,pooler/electrum-ltc