XPS 8960, must I keep these huge folders from Dell?

I'm not one to go through my hard drive and toss things I don't like. Nevertheless, I did come across this folder in the C: drive called C:\Drivers which apparently contains drivers that Dell installed in my XPS 8960 at the factory:

I wouldn't complain about these, but they take up 4.19 GB of drive space. 

Are these the actual drivers themselves - which I must not remove - or are these the installers for the drivers, which I believe I can remove? Thanks for your advice.