Project: datamanagement
Issue DM-2949: remove dead code and dependencies from datarel
Removing the {{datarel}} package entirely has proved to be difficult (DM-2928, DM-2948), so instead I'm simply going to remove non-ingest code (and dead ingest code) from the package, along with its dependencies on {{ap}} and {{testing_endToEnd}}. Other dependencies will be retained even if they aren't necessary for the code that will remain in {{datarel}}, to support {{lsstDoxygen}}'s use of {{datarel}} as a top-level package for documentation generation.
Story points: 1