In SaaS Production environment fields cannot be deleted but in a Sandbox yes.

This idea is only for Sandboxes.

Fields with ObsoleteState = Removed are not visible but accessible only via upgrade codeunit. I think that would be useful to have a graphic way to be able to check if a field has been cancelled, maybe a page with deprecated fields or from the inspector or just opening the table from the URL (e.g. table=XXX).
This will facilitate verifying that deployment with "schemaUpdateMode": "ForceSync" actually worked removing the field.
Category: Development
Needs Votes
Ideas Administrator

Thank you for this suggestion! Currently this is not on our roadmap. We are tracking this idea and if it gathers more votes and comments we will consider it in the future. Best regards, Business Central Team