Silence deprecation warning by removing the hp.read_map verbose kwarg

[David-McKenna]

Noticed this warning while running pytest for the other MR.

This kwarg no longer does anything, as per the docs. https://healpy.readthedocs.io/en/latest/generated/healpy.fitsfunc.read_map.html#:~:text=verbosebool%2C%20deprecated,has%20no%20effect

[what-the-diff[bot]]

PR Summary

• Simplification of Data Reading Process in haslam.py The code that reads map data in the haslam.py file has been simplified. The verbose parameter, which controls the display of detailed logging information, has been removed to lead to a cleaner, less cluttered code execution.

[David-McKenna]

Okay, that fail isn't my fault, that's the codecov issue that main/master also has.