Can't remove safestrap startup

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http://forum.xda-developers.com – Hey guys, Just got a used Razr M that was rooted with safestrap 3.05 v. I unrooted the phone and can't seem to get rid of safestrap. There's no app icon or apk on the phone for me to uninstall safestrap. I was going through the recovery menu and could not find anything on how to remove safestrap. When I turn on the phone, it says safestrap disabled - 10 second countdown, then the phone starts its normal sequence. It's running stock jelly bean at the moment. Any advice guys? (HowTos)