Garry's mod options include Counter Strike Source tabs

I recently downloaded the files from CS:S to get rid of the skins I put on for the CS:S weapons. When I came back to the game, I noticed tabs from CS:S in my options, I cannot walk because this (Alt cannot be properly set up) therefore it’s hard to play a game mode I like. If anyone has any suggestions or at least a fix, please tell me.

Buy the game, don’t pirate it.