The four-year court battle of Hollywood-heavyweight agencies is over. Both sides have agreed to settle the lawsuit CAA filed days after UTA poached of several agents in March 2015. “It’s all over at last, thankfully,” said an agency source close to that matter told Deadline tonight. Attorney Bryan Freedman, who was representing UTA in the long legal tussle, said: “The matter was resolved, and the state court action, the arbitration and the petitions were all…