quiet the warnings when cython files cannot be deleted (which can happen if they are already deleted, and its not a big deal and warnings is not necessary)
quiet the warnings when cython files cannot be deleted (which can happen if they are already deleted, and its not a big deal and warnings is not necessary)

qutip/qutip,qutip/qutip,anubhavvardhan/qutip,zasdfgbnm/qutip,zasdfgbnm/qutip,anubhavvardhan/qutip,cgranade/qutip,cgranade/qutip