PHILADELPHIA — Miles McBride was, in his words, “extremely comfortable” with an expanded role as long as OG Anunoby was out. He proved it on Mother’s Day. Starting in place of Anunoby, McBride enjoyed a career-best playoff performance as the Knicks drubbed the 76ers 144-114 to return to the Eastern Conference finals for the second time in as many years. Knicks guard Miles McBride reacts as he walks off the court at the end of the 4th quarter after the Knicks defeat the Philadelphia 76ers 144-114. Charles Wenzelberg / New York Post McBride scored 25 points and hit seven 3-pointers in nine attempts, four coming in an early onslaught that made it clear this series was going to end without a return trip to New York City. In his 29 minutes, the Knicks outscored the 76ers by a team-high 33 points. “I always feel like I’m going to make shots,” McBride said. “I trust my work, trust my preparation.…