BRUSSELS (Reuters) -Europe's attempt to give workers at Uber, Deliveroo and other online platforms more social and labour rights failed a second time after France and three other countries abstained from voting on the watered-down political deal. Belgium, the current holder of the rotating EU presidency, is unlikely to muster enough support for yet another attempt, especially as the European Parliament which has to endorse a final deal, gradually winds down ahead of elections in June. Still, it