Commands to remove JAMF management and client from local computer: (you must remove the the MDM management profile BEFORE deleting the JAMF client)
jamf removeMDMProfile
jamf removeFramework
Command to remove a computer from the JSS:
set JSSMAC=$(networksetup -getmacaddress en0)
curl -k -v -u username:password https://yourjss.server.url:8443/JSSResource/computers/macaddress/$JSSMAC -X DELETE
This can be useful when resetting a computer back to an original state.