Changes to Delete one notification

added the non-success response with the status 403

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 404 status

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

for the path request parameter notificationId, 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 404 status

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