Remove a credentialing workflow note

Deletes the specified note from the credentialing workflow. Use this to remove an annotation that was created in error or is no longer relevant.

Preconditions: noteId must identify an existing note that belongs to the specified workflowId.

Returns 204 with an empty body on success. Returns 404 when the note is not found. Returns 400 when the note exists but belongs to a different workflow.