Authorize a non-admin developer in Xcode / Mac OS
You need to add your macOS user name to the _developer group. See the posts in this thread for more information. The following command should do the trick:
sudo dscl . append /Groups/_developer GroupMembership <username>
Finally, I was able to get rid of it using DevToolsSecurity -enable on Terminal.Thanks to @joar_at_work!
FYI: I'm on Xcode 4.3, and pressed the disable button when it launched for the first time, don't ask why, just assume my dog made me do it :)
$ dseditgroup -o edit -u <adminusername> -t user -a <developerusername> _developer