Cleanup of WESTPA-for CI testing

[jeremyleung521]

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Goals and Outstanding Issues. A clear and concise list of goals (to be) accomplished.

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Major files changed.

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Status.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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