By Francesco Canepa FRANKFURT (Reuters) -The European Central Bank could end its stimulus programme earlier than planned but it is unlikely to raise its main interest rate in July as investors are expecting, ECB policymaker Martins Kazaks told Reuters. Investors have brought forward their bets on the bank’s first rate hike in more than a decade after ECB President Christine Lagarde on Thursday opened the door to such a move and acknowledged mounting inflation risks. But Kazaks, who is Latvia’s central bank governor, pushed back against market bets on a July move because this would imply a comp…