Drop server-side restrictions implementation

I don't think this sees sufficient use to justify updating.
Especially because it's non-trivial with forge's network changes.
Ping me if you actually used this.

src/main/resources/mcmod.info

@@ -117,22 +117,6 @@
     "screenshots": [],
     "dependencies": []
   },
-  {
-    "modid": "replaymod-restrictions",
-    "name": "Replay Mod - Restrictions",
-    "description": "Server-side Restrictions Module of the ReplayMod - Restrict what clients can do in replays",
-    "version": "${version}",
-    "mcversion": "${mcversion}",
-    "url": "https://replaymod.com",
-    "updateUrl": "https://replaymod.com/download",
-    "authorList": [
-      "CrushedPixel",
-      "johni0702"
-    ],
-    "logoFile": "replaymod_logo.png",
-    "screenshots": [],
-    "dependencies": []
-  },
   {
       "modid": "replaymod-compat",
       "name": "Replay Mod - Compatibility",