How to delete or disable Device Security on Samsung S6/7 running Android 7.0?

I'm not sure if this is possible, but I'm trying to test my phone with a customized security software but I need to delete Device Security to test it out. Any ideas on how to delete/disable Device Security? I'm okay if it requires deleting Device Maintenance.

I've rooted my device and have tried disabling/deleting device security and device maintenance but when I do so, it crashes the phone so that I have to factory reset it. Any suggestions?

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