Here’s how you can hide software updates from the Mac App Store in OS X.
1. Open the Mac App Store.
2. Go to the Updates tab.
3. Right click on the software update you want to hide, and choose Hide Update.
You can see all software updates again by doing the following:
1. Go to the Store menu.
2. Select the Show All Software Updates option.
For more information, see the original article at the link below.
Hide Software Updates from the App Store in Mac OS X | OS X Daily