Remove print statements when reading/writing cache values.

[kemaleren]

Remove print statements in write_pickle_object and read_pickle_object.

When running a large pipeline with multiple cached values, it's a lot of unnecessary noise on screen. Also, when using the ProgressBar adapter, the print statements interfere with the progress bar.

Checklist

• PR has an informative and human-readable title (this will be pulled into the release notes)
• Changes are limited to a single goal (no scope creep)
• Code passed the pre-commit check & code is left cleaner/nicer than when first encountered.
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future TODOs are captured in comments
• Project documentation has been updated if adding/changing functionality.

[skrawcz]

🤦 Thanks for catching @kemaleren !

[skrawcz]

Will push this out Monday or Tuesday