Remove etherchannel (port-channel)
Switch#conf t
Switch(config)#int gix/x/x
Switch(config-if)#no channel-group x
Switch(config)#exit
Switch(config)#no interface port-channelx
Switch(config)#
Verify your new change with below commands
Switch#show etherchannel summary
You may want to select multiple interfaces
Switch(config)#int gi1/0/x, gi2/0/x, gi3/0/x