Remove hacks now that upstream has updated packages

[mikemhenry]

Description

Removed forks when installing openmm nightly

Motivation and context

Now that parmed has made a new release to support the openmm name change + we just cut (will be on conda-forge soon) a new openmoltools release, these CI hacks are no longer needed.

Resolves #798

How has this been tested?

Tested on CI

Change log

CI no longer requires forks for openmm namespace changes.  

[mikemhenry]

Just waiting for the openmoltools release to show up here https://github.com/conda-forge/openmoltools-feedstock/pulls

[codecov]

Codecov Report

Merging #868 (03d34be) into master (c1f5769) will decrease coverage by 0.01%.
The diff coverage is n/a.

[ijpulidos]

Nice!... I think we could also get rid of pinning the openmm version in

perses/devtools/conda-envs/test_env.yaml

Line 19 in c1f5769

- openmm=7.5.1

What do you think?

[ijpulidos]

We should probably also fix this in the conda-forge feedstock meta.yml file that I changed to deal with this at the time. Right?

[mikemhenry]

Nice!... I think we could also get rid of pinning the openmm version in

perses/devtools/conda-envs/test_env.yaml

Line 19 in c1f5769

- openmm=7.5.1

What do you think?

Yes I will do that now...

We should probably also fix this in the conda-forge feedstock meta.yml file that I changed to deal with this at the time. Right?

On our next release, we should bump it up to 7.6.x