add socket.io back, cleanup

Change-Id: I74e043268c23fb45371f1e397ca2931ca177afc3
diff --git a/package.json b/package.json
index 75c81f2..4097c5f 100644
--- a/package.json
+++ b/package.json
@@ -14,17 +14,12 @@
     "env": "0.0.2",
     "express": "^4.17.1",
     "express-session": "^1.17.1",
-    "express-ws": "^4.0.0",
-    "fast-xml-parser": "^3.17.4",
-    "faye": "^1.3.0",
-    "mongoose": "^5.9.19",
     "passport": "^0.4.1",
     "passport-local": "^1.0.0",
     "passport-session": "^1.0.2",
-    "passport.socketio": "^3.7.0",
     "path": "^0.12.7",
     "redis-url": "^1.2.1",
-    "socket.io": "^2.3.0"
+    "socket.io": "^4.0.1"
   },
   "devDependencies": {
     "jami-web-client": "file:client",