SCCM 2012 how to revert clients back to automatic updates?

I've found that SCCM 2012 Software Updates is more of a pain than it's worth so I've decided to revert back to my Windows clients using automatic updates.
I've removed the deployment for my SUP group, but I still see in the client's Windows Update shows updates still managed.
How can I revert them back?
cwhitmore88Asked:
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Windows Server 2012

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