Can I delete Fingerprints or disable Fingerprint features with ADB?

We are testing Fingerprint on emulators. Once setup I would like to get back to the state before we setup fingerprints... The only way I can see to do that is delete via the UI all the fingerprints. Can ADB delete all fingerprints on an emulator? Or... I'm new to emulators. Could I close the emulator without saving it's state and just relaunch it? Seems to go pretty fast via the command line. Thanks