System cpp policy can not be removed from control-plane interface

[Wizard4777]

Coming across this error when trying to remove the policy. Is this system default?

Switch(config)#control-plane
Switch(config-cp)#no service-policy input system-cpp-policy
Switch(config-cp)#
*Mar 20 12:56:21.920: System cpp policy can not be removed from control-plane interface
Switch(config-cp)#

Cisco Catalyst C3850-48P Switch

[MHM Cisco World]

control-plane interface <- this CPU

And this CoPP can not delete it can only modify 

MHM