Hi if you don't use Norton online back up
Then NO if you do then YES. What is your.
Do you use Norton at all on your PC for anti virus etc.
If not what other protection do you have while on line.
What operating system do you have.
If you dont use Norton and its on your system and you want to delete it then you will need a tool to remove Norton correctly.
You could use Revo Uninstaller You will get more advice here from Norton users, I used to use Norton but not at the moment.