Tidy up repository - Githubissues

We should review the whole repository:

[x] Delete any branches which participants do not need
[x] Remove compiled_workbook_objects/PathwaysToNetZero_Simplified_Anonymized_Compiled.pkl
[x] Remove any files / folders which we no longer use
[x] Check that all Python scripts work with the current env.py, both in open-loop and closed-loop mode
[x] Remove old, commented-out code from all Python scripts
[x] Update all READMEs as necessary

rangl-labs / netzerotc