qt: Remove control characters from ko_KR translation
qt: Remove control characters from ko_KR translation

Last Transifex pull (064a690) introduced a few control characters
into the Korean translation, which sometimes causes the build to fail.

Manually remove these characters for now to get the build working --
they should still be removed at Transifex too.

Crowndev/crowncoin,domob1812/crowncoin,Crowndev/crowncoin,Infernoman/crowncoin,Infernoman/crowncoin,Crowndev/crowncoin,syscoin/syscoin,syscoin/syscoin,domob1812/crowncoin,Crowndev/crowncoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,domob1812/crowncoin,domob1812/crowncoin,Infernoman/crowncoin,domob1812/crowncoin,Infernoman/crowncoin,domob1812/crowncoin,Infernoman/crowncoin,syscoin/syscoin,syscoin/syscoin,Infernoman/crowncoin,syscoin/syscoin,Crowndev/crowncoin,Crowndev/crowncoin