Remove unnecessary pushd / popd
Remove unnecessary pushd / popd

git clone is already specifying its destination

Signed-off-by: C.J. Jameson <ec1b14366327ff10b752f9848cd5b8311e885007@pivotal.io>

pivotal/workstation-setup,professor/workstation-setup,professor/workstation-setup,jonsgreene/workstation-setup,pivotal/workstation-setup,jonsgreene/workstation-setup