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

i18n/en.json

@@ -3802,10 +3802,6 @@
     "id": "api.user.verify_email.token_parse.error",
     "translation": "Failed to parse token data from email verification"
   },
-  {
-    "id": "api.web_socket.connect.check_origin.app_error",
-    "translation": "Invalid Origin header set during websocket upgrade."
-  },
   {
     "id": "api.web_socket.connect.upgrade.app_error",
     "translation": "Failed to upgrade websocket connection."