NSW 2006 - Services which can be disabled ??

I have the only the NU portion of NSW 2006 installed, running in parallel with NAV 2012.  I'm looking for ways to remove Norton Protection Center (now disabled), but, that's covered by another thread.  In addition to NPC, which other services can I disable? My candidates (all installed by NSW 2006) are:

 

A) Symantec Core LC,

B) Symantec Event Manager; and,

C) Symantec Settings Manager.

 

I disabled them all .. and nothing much happened.  Do I need them, truly?  Best, CBA