By Andrew MacAskill LONDON (Reuters) -British police using new powers took away audio speakers from demonstrator Steve Bray, who is known for shouting “Stop Brexit” at lawmakers outside parliament and sometimes disrupting live news reports with his pro-European Union banners. Bray has been a regular presence at Westminster for the last five years, playing protest songs and confronting lawmakers from Prime Minister Boris Johnson’s Conservative party, which led Britain out of the European Union. As he attempted to set up on Tuesday, Bray said he was surrounded by about 20 police officers who too…