How do I get rid of this bracket in sheet music in Logic Pro?

I'm writing a piece for string orchestra and when viewing the score, the violas have a part written on two different lines connected by a curly bracket (see picture). How do I get rid of this? I'm trying to edit the score in MuseScore and this bracket keeps messing things up. Is there a way to correct it in MuseScore?

?2019-03-28T04:09:30Z

Sorry, there's like 50,000 things in a degraded image, can't see what you're looking at. Please update with just a small area.
If using a mac, so a Shift Command 4 and select your area.