Hello,
Your question - "I want to hide SEP notification icon, start menu group, add remove programs list, Setup folder in program files, in short from everywhere and that too on an unmanaged system. Is it possible?"
Answer -
1) hide SEP notification icon - As stated above by ManishS it is Possible, check this Article:
http://www.symantec.com/docs/TECH102884
2) start menu group - It is Possible by creating a Custom Package and deploying it, check this Article: http://www.symantec.com/docs/TECH165801
3) add remove programs list - Not possible with SEP. However contact Microsoft, probably they can assist you.
4) Setup folder in program files - Not possible with SEP, however you can hide them via Windows GPO, check this Article: http://technet.microsoft.com/en-us/library/cc961717.aspx
5) in short from everywhere and that too on an unmanaged system. - Not possible with SEP. However contact Microsoft, probably they can assist you.
However, Question arises since you are going to have a unmanaged computer, why hide SEP?
How are you thinking of Hiding the services of SEP in the services.msc?
Hope that helps!!