New comment by the-maldridge on void-packages repository

https://github.com/void-linux/void-packages/pull/28825#issuecomment-780870153

Comment:
INSTALL.msg is reserved for thing that will break your system if you don't attend to them (think sshd updates that require immediate restart).  Since this is just a compiler, we should not ship an installer message for it.  The build_style though should be updated to remove the now obsolete variables.