quic: remove no longer valid CHECK

PR-URL: #34247
Reviewed-By: Anna Henningsen <anna@addaleax.net>

Author: jasnell

src/quic/node_quic_session.cc

@@ -1682,11 +1682,6 @@ void QuicSession::Close(int close_flags) {
     listener()->OnSessionClose(error, close_flags);
   else
     Destroy();
-
-  // At this point, the QuicSession should have been destroyed, indicating
-  // that all cleanup on the JavaScript side has completed and the
-  // QuicSession::Destroy() method has been called.
-  CHECK(is_destroyed());
 }
 
 // Mark the QuicSession instance destroyed. This will either be invoked