remove duplicate commands

util/RegisterSlashCommands.js

@@ -19,7 +19,7 @@ module.exports = {
 
     for (const file of commandFiles) {
       const command = require(`../commands/${file}`);
-      commands.push(command); // Include global commands in guild
+      if (!commands.global) commands.push(command); // Include global commands in guild
     }
 
     const rest = new REST({ version: '10' }).setToken(client.config.Token);