Delete Norton leftover files

After installing Norton Security, Norton did not remove the installation files (5 files) from "C:\Users\Public\Downloads\Norton\{NSxxxxxxxxxxxxxxxxxxx}". If I delete these files myself, will it cause Norton Security to crash?

The 5 files are:

- 2015Plugin.dll

- downloadinfo.txt

- NSDownloader.exe

- NS-ESD-22.1.0.9-EN.exe

- symcdefs.exe