ITV will continue to eye acquisitions in the production space with CEO Carolyn McCall telling Deadline that it will be "very disciplined" about future purchases. However, the company has ruled out "significant" acquisitions in the scripted space in the U.S. McCall's comments come as the battle to buy Endemol Shine heats up with multiple bidders understood to be eyeing the Big Brother and Black Mirror producer. McCall told Deadline, "We've had a very effective strategy of…