Replaced use of DjsUtil.delayFor

[optimisticside]

delayFor is not a function of discord.js's Util library.

[DevYukine]

Hey, thanks for this PR, can you just import setTimeout without renaming it to delayFor and just change the name where the function is called? i think thats more intuitive :)

otherwise LGTM

[optimisticside]

setTimeout is already a global function, and would cause confusion. I could call the function wait or use it through the library by doing something like Timers.setTimeout.

[DevYukine]

calling it wait sounds fine to me 👍

[optimisticside]

I realized there's already a function in Util called sleep which does the same thing, so I'll just use that.