I've decided to uninstall and reinstall Xcode, since McAfee quarantined Xcode files and won't let me restore them. When I reinstall them I'll exclude the Xcode files from being scanned by McAfee.
I'm unfamiliar with uninstalling on a Mac. If I recall, it's a matter of sending the icon in Applications to the Trash and to uninstall and then to reinstall I just go to App Store and install Xcode again. Am I correct?
I don't think the MAS will cooperate.
1.) Move Xcode to the trash, then empty.
2.) Download the 9.4.1 .xip from here ( https://developer.apple.com/download/more/ ) and run to re-install.
3.) Get rid of mcafee - it's a bill of goods/security theater that will only continue to generate grief.
Note there are ancillary files that exist outside the Application, but in your example, I don't think you need to worry over them. Also note this may or may not hose the MAS's ability to know about the reinstall vs. the next version, etc.