Regular expression to remove "UNUSED" line

I have a list CSS file with a list of rows like such:


UNUSED.ui-accordion .ui-accordion-content-active{display:block;}

I’m trying to write a regular expression to remove all of the lines that start with
UNUSED all the way upto the bracket (}).

I’ve come up with so far:
UNUSED.ui<[^>]*/}

Could someone help me?
thanks