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:

ai/install-stylegan2.sh

Line 20 in 98ab888

pip install -r dataset-tools/requirements.txt

[cpietsch]

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