Not sure if there has been a thread on this, but it's something I just discovered and I've seen people ask how to do this.
Just go to settings > general > usage > manage storage, then tap on the update and hit delete.
Know if only people knew how to do this with iOS 7
Just go to settings > general > usage > manage storage, then tap on the update and hit delete.

Know if only people knew how to do this with iOS 7