SARAJEVO, April 1 (Reuters) - Official symbols adopted by Bosnia's main ethnic groups are to be abolished following a ruling by the former Yugoslav republic's top court. The symbols introduced after the 1992-95 Bosnian war in the country's two semi-autonomous regions were discriminatory because each ethnic group should enjoy equality in all areas of the country, according to a decision by the Constitutional Court published late on Friday. The ruling means the Muslim-Croat federation and the Serb Republic must change their laws on their coat of arms, flag and anthem in the next six months. Serbs have a coat of...