Yes you can safely "Uninstall" McAfee Security Scan Plus. It is sometimes offered as optional, along with other various programs. When installing Adobe Flash Player usually. It has no "Protection Capabilities" what-so-ever. It,s sole purpose is to check and see if you have Anti-virus-Anti-Spyware Protection installed.
More or less a "Sales and Marketing " program.
Uninstall from Control Panel/Programs and Features...Add/Remove..Restart.
McAfee Security Center is your Protection....
Since there has been no response, I personally one could assume this to be Answered?