OTTAWA – Canada scrapped its digital services tax targeting U.S. technology firms late on Sunday, just hours before it was due to take effect, in a bid to advance stalled trade negotiations with the United States.Canadian Prime Minister Mark Carney and U.S. President Donald Trump will resume trade negotiations in order to agree on a deal by July 21, Canada’s Finance Ministry said in a statement.Trump abruptly called off trade talks on Friday over the tax targeting U.S. technology firms, saying that it was a ‘blatant attack.