Removing a chat command

I tried removing a chat command with this code.. which i got from Oxide/Command.cs at master · OxideMod/Oxide · GitHub

Code:

[ChatCommand("removecmd")]
            void cmdRemove(BasePlayer player, string command, string[] args)
            {
                var rustcommands = typeof(ConsoleSystem.Index).GetField("dictionary", BindingFlags.NonPublic | BindingFlags.Static).GetValue(null) as IDictionary<string, ConsoleSystem.Command>;
                rustcommands.Remove(args[0]);
                SendReply(player, "You have removed the " +args[0]);
            }

Did anyone managed to remove a command somehow ?

Thanks for any help,
PaiN