A fix for this issue has been updated on the main BetterLinux repo. To get the new script, run:
yum upgrade betterlinux\*
This upgrade will install a new bl-cpanel-install and bl-mysql-install scripts. If you have uninstalled prior to this update, you can restore mysql back to the cPanel mysql, by running this command:
Also, this upgrade makes it safe to uninstall BetterLinux and restore mysql to the original cPanel version that was on the system prior to the BetterLinux install.