Hide error: Not holding an item

When you aren't holding an item upon executing /dupe:

You must\sbe\sholding an item\sin\syour\shand\.

Hide dupe successful message

When /dupe is successful:

Duped\sitem\s[0-9]+\stime\(s\)

Hide money earned message

When you kill a mob and earn money:

You've\searned\s\$[0-9]+\sby\skilling\sa\s[A-Za-z0-9]+