BOSTON — The Bruins, who were already without Elias Lindholm, lost Pavel Zacha in Thursday’s game against the Flyers at TD Garden. Zacha slid into Lindholm’s first-line center slot to open the game, but he left with an upper-body injury in the second period. The Bruins announced that Zacha would not return for the third period. The Bruins only have two more games - Sunday’s Stadium Series game in Tampa and Wednesday at Florida before the three-week Olympic break. Zacha has been a valuable player in all scenarios for the Bruins and has 15 goals and 22 assists for 37 points in 54 games.