I just removed it by uninstalling the Dell Foundation Services program. I have no idea what it did, but it's gone now.
I have a new Dell Inspiron 3847 running Windows 10.  An icon has appeared in the taskbar that I can't do anything with except mouseover, which displays "Dell Common Settings".  It looks like a white gear on a blue background.    Can anyone tell me just what this is?   I doesn't seem to be doing anything that I can tell - other than just aggravating me!  Appreciate any ideas about it's purpose. 
Icon in Taskbar - Dell Common Settings