Changes to Delete an unused ListingSource as admin

removed the required property source/sourceType from the response with the 400 status

removed the required property source/sourceType from the response with the 401 status

removed the required property source/sourceType from the response with the 403 status

removed the required property source/sourceType from the response with the 404 status

removed the required property source/sourceType from the response with the 409 status

removed the required property source/sourceType from the response with the 500 status

removed the required property source/sourceType from the response with the 503 status

for the path request parameter listingSourceId, the format was generalized from uuid to no format

added the required property source/type to the response with the 400 status

added the required property source/type to the response with the 401 status

added the required property source/type to the response with the 403 status

added the required property source/type to the response with the 404 status

added the required property source/type to the response with the 409 status

added the required property source/type to the response with the 500 status

added the required property source/type to the response with the 503 status

endpoint added