Nerf the amount or timer on Nox Gas Canisters

@SmallZzy When fighting a Caustic all you have to do is get a little high ground on him and he can't hide behind his canisters which takes so long to deploy that a decent player could send him back to the lobby before it does. And considering his hitbox size and lack of escape, spamming canisters is the only way he can make some temporary cover for himself out in the open.

Please learn the different characters strengths and weaknesses and exploit them to win instead of crying for nerfs on one of the weakest legends in the game, thanks.