trim down env yaml

Author: atravitz

environment.yaml

@@ -2,27 +2,16 @@ name: openfe-notebooks
 channels:
   - conda-forge
 dependencies:
-  - MDAnalysis
   - coverage
   - ipywidgets
-  - lomap2
   - lxml
-  - mdtraj
   - nbval
-  - networkx
   - nglview
   - notebook
-  - openff-forcefields
-  - openmm
-  - openmmtools>=0.23.0
   - pip
-  - pymbar
   - pytest
   - pytest-cov
   - pytest-xdist
   - python
-  - rdkit
-  - typing_extensions
   - gufe>=1.7.0
   - openfe>=1.7.0
-  - py3dmol