revertws (#17216)

* Revert "MM-34000: Use non-epoll mode for TLS connections (#17172)"

This reverts commit 2743089b54.

* Revert "MM-33233: Fix double close of webconn pump (#17026)"

This reverts commit 0f98620b65.

* Revert "MM-33836: Detect and upgrade incorrect HTTP version for websocket handshakes (#17142)"

This reverts commit 4c5ea07aff.

* revert i18n

* Revert "MM-21012: Revamp websocket implementation (#16620)"

This reverts commit a246104d04.

* fix go.mod

* Trigger CI

app/web_hub.go

@@ -114,9 +114,6 @@ func (a *App) InvalidateWebConnSessionCacheForUser(userID string) {
 func (s *Server) HubStop() {
 	mlog.Info("stopping websocket hub connections")
 
-	// Wait until all messages have finished reading.
-	s.webConnSemaWg.Wait()
-	// Now stop the hub.
 	for _, hub := range s.hubs {
 		hub.Stop()
 	}