removed su check

[niallrobinson]

I propose removing this check for running as root. I'm trying to use SHARPpy in an instance where I actually do want to install it as root. (I'm installing in a Docker container where there is only one, 'root', user)

[wblumberg]

Hey @tsupinie , do you remember why this check for root was put into the program?

[tsupinie]

Yes, I put that in because my Python distribution installs as root, which caused some problems someplace that now I don't quite remember. I can change my workflow to install in a local directory. That's probably what I should have done in the first place.