fix: Application did not respond error in purge command

[coendvrs]

Removed 'channel' from 'context.channel.send'
Returns "application did not respond" otherwise

[kkrypt0nn]

Hey there,

That would not fix the issue in its entirety. That was the original code, though resulted to "Unknown Interaction" errors as you respond to the interaction after the channel has been purged.

I've committed a fix that fixes both issues, bit hacky but does the trick.

Thanks for pointing it out nonetheless.