Revert "Install python packages via pip first"
Revert "Install python packages via pip first"

This reverts commit 135712055836bf28d435f35371401bf602203018.

UCL/GreatCMakeCookOff,UCL/GreatCMakeCookOff,mbakthav/GreatCMakeCookOff,UCL/GreatCMakeCookOff,mbakthav/GreatCMakeCookOff,mbakthav/GreatCMakeCookOff,UCL/GreatCMakeCookOff,mbakthav/GreatCMakeCookOff