Remove mkl
This PR reverts !29 (merged) because this breaks htcondor
(for now). This can be reinsated once https://github.com/conda-forge/htcondor-feedstock/pull/7 is merged and the new htcondor build is available.
This PR reverts !29 (merged) because this breaks htcondor
(for now). This can be reinsated once https://github.com/conda-forge/htcondor-feedstock/pull/7 is merged and the new htcondor build is available.