Revert "Attempt to fix problem reported by Arne in issue #28"
Revert "Attempt to fix problem reported by Arne in issue #28"

This reverts commit dba5f1e3a742cb7e6f0972d29e9e98ae9d9b8217.

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