BUFFALO, N.Y. — If relegating starting goalie Carter Hart to practice-only duty this week didn’t get the Flyers’ attention, perhaps placing defenseman Shayne Gostisbehere on waivers will. Except for noting Gostisbehere’s inconsistencies reflecting that of his entire lineup over the past month, coach Alain Vigneault repeated a vague response in saying the decision to waive the defenseman provided Philadelphia more …