Add Shared Nested #delete_nil_paths

[bdunne]

Add with similar functionality to delete_blank_paths

[miq-bot]

This issue has been automatically marked as stale because it has not been updated for at least 3 months.

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[gtanzillo]

Closing due to lack of interest. If you are interested in implementing this, please re-open.

[chessbyte]

This is a good first issue, so re-opening.