Just about any program can be uninstalled from Control Panel.
Go there, select Classic View, open "Programs and Features"
and look down the list of programs for anything 'Norton' or
'Symantec'. There may well be more than one entry. Click on
them one at a time, and there will be an uninstall option.
Norton programs, when uninstalled, tend to leave a lot of debris behind.
When you are finished uninstalling, download and run their cleanup
tool:
http://service1.symantec.com/Support/tsgeninfo.nsf/docid/2005033108162039