install-stylegan2 duplicated dataset-tools install

[cpietsch]

Hey I am not sure why, but you are trying to install dataset-tools a second time without --user and it is pointing to a wrong path: https://github.com/dvschultz/ai/blob/98ab8885d092ad3bbdc3f46bd90e91e3dc44bd59/install-stylegan2.sh#L20

[cpietsch]

probably this line needs to be: pip install -r requirements.txt