Remove fetchMessages duplicate code

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Command Cooldowns are now available through a new inhibitor/finalizer combo. Simply set command.conf.cooldown to an integer in seconds to put a cooldown on that command.
 
 ### Changed
+- Changed fetchMessages to fetchMessage (backend change)
 - Backend is now class based. Users main files will need to be updated. The interface is the same as creating a discord.js client, only using komada, and with komada config. No more use of start, but client.login(token) is needed now.
 - Usage will no longer be calculated everytime a command is run, but instead stored in command.usage.
 - Usage has been refactored into a ParsedUsage class, and an argResolver class. (internal)
@@ -29,7 +30,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Use Discord.Permissions to generate and keep cached an implied permissions object, instead of generating a new object every time a command is run.
 
 ### Fixed
-- 
+-
 
 ### Removed
 - generateInvite.js core function in favor of the Discord.JS generateInvite.
@@ -377,4 +378,4 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 [0.12.4]: https://github.com/dirigeants/komada/compare/0.12.0...0.12.4
 [0.18.0]: https://github.com/dirigeants/komada/compare/0.12.4...0.18
 [0.18.1]: https://github.com/dirigeants/komada/compare/0.12.4...0.18.1
-[0.19.0]: https://github.com/dirigeants/komada/compare/0.18.1...0.19.0
+[0.19.0]: https://github.com/dirigeants/komada/compare/0.18.1...0.19.0

classes/argResolver.js

@@ -13,15 +13,6 @@ module.exports = class ArgResolver {
 
   async msg(arg, currentUsage, possible, repeat, msg) {
     if (/^\d+$/.test(arg)) {
-      if (this.client.config.selfbot) {
-        const mes = await msg.channel.fetchMessages({ around: arg }).catch(() => {
-          if (currentUsage.type === "optional" && !repeat) {
-            return null;
-          }
-          throw `${currentUsage.possibles[possible].name} must be a valid message id.`;
-        });
-        return mes.filter(ele => ele.id === arg).first();
-      }
       const mes = await msg.channel.fetchMessage(arg).catch(() => {
         if (currentUsage.type === "optional" && !repeat) {
           return null;