I was looking at the data_driven config set and we could do some simple cleanups there.
- Remove commented out copyFields as they aren't adding any value here.
- Fix indentation in the managed-schema file
- in the solrconfig.xml file the spellchecker refers to non existent fields. Fix/Remove those as well.
SOLR-8078was created just for that so I'll mark that as a duplicate of this Jira