Hackintosh: How to Remove Persistent Boot Flags

If you are encountering an issue where your system is continuing to boot, for example, in to safe mode even though the boot.plist file in the Extra's folder is free of -x and the Chimera boot window is free of additional boot flags, this is how you can fix it.

In OS X open Terminal

Then type:
sudo nvram -d boot-args

You'll have to type confirm by typing your password but that's all there is too it.  Hopefully you are no longer experiencing any random boot flags occurring when booting your Hackintosh.