refactor: remove user bot methods (#2559)

* [WIP] Remove user bots

* more backend userbot removal

* Add mfaEnabled back

* revert client presences store removal

* partially revert getAuth changes

* remove more no longer used children of ClientUserGuildSettings

* fix a bug with this pr and TextBasedChannel.applyToClass

* remove a syncGuilds reference

* more user bot data handling

* various guildSync cleanup

* bots can't call logout

Had the user/bot portions of the code mixed up. Though, does this need to be a promise anymore?

* make ClientManager#destroy() sync

It nolonger needs to be a promise, and nothing depended on it being a promise that I can tell.

* requested change

* Fix massive error

* no longer used as it's userbot only

src/client/ClientManager.js

@@ -63,15 +63,7 @@ class ClientManager {
 
   destroy() {
     this.client.ws.destroy();
-    if (!this.client.user) return Promise.resolve();
-    if (this.client.user.bot) {
-      this.client.token = null;
-      return Promise.resolve();
-    } else {
-      return this.client.api.logout.post().then(() => {
-        this.client.token = null;
-      });
-    }
+    if (this.client.user) this.client.token = null;
   }
 }