Remove the drupal/core requirement
Problem/Motivation
From https://www.drupal.org/docs/develop/using-composer/add-a-composerjson-file#core-compatibility:
It is better not to provide a drupal/core version requirement in composer.json because Drupal's composer facade will generate the appropriate metadata based on the info.yml file.
And on a personal note, projects that have drupal/core requirements in the composer.json file can make updating things with dependencies a real pain. I can't believe I left it in there this long.
Edited by drupalbot