By Michael Holden LONDON (Reuters) -Police on Monday evicted squatters who had occupied a London mansion belonging to the family of Russian billionaire Oleg Deripaska, who was placed on Britain’s sanctions list last week in response to Russia’s invasion of Ukraine. Wearing riot gear, officers entered the multi-million pound mansion in Belgrave Square, a home to numerous foreign embassies that is located in an upmarket area of the British capital. “You occupy Ukraine, we occupy you,” the squatters, who described themselves as anarchists, said in a statement. “By occupying this mansion, we want …