Removed discord.net submodule for now

src/NadekoBot/project.json

@@ -38,9 +38,7 @@
     "Newtonsoft.Json": "9.0.2-beta1",
     "NLog": "5.0.0-beta03",
     "System.Diagnostics.Contracts": "4.3.0",
-    "System.Xml.XPath": "4.3.0",
-    "Discord.Net.Commands": "1.0.0-*",
-    "Discord.Net.WebSocket": "1.0.0-*"
+    "System.Xml.XPath": "4.3.0"
   },
   "tools": {
     "Microsoft.EntityFrameworkCore.Tools.DotNet": "1.1.0-preview4-final",