Removes deprecated API method get_batch_job_result

[matsduf]

Purpose

API method get_batch_job_result was deprecated in version [v11.5.0] (part of release [v2025.1]) to be removed in release v2025.2. This PR removes the method.

Context

zonemaster/zonemaster#1433 (updates specification)

How to test this PR

• Review
• Unit tests shoud pass.
  ...
  [v11.5.0]: https://github.com/zonemaster/zonemaster-backend/releases/tag/v11.5.0
  [v2025.1]: https://github.com/zonemaster/zonemaster/releases/tag/v2025.1

[matsduf]

@marc-vanderwal, please re-review.

[matsduf]

Can this be merged now?

[marc-vanderwal]

I successfully tested this PR for release 2025.2.

Unit tests pass on my development setup.

Also, some manual testing shows that the old get_batch_job_result API method no longer works. Using the following command:

$ curl -s -d '{"method":"get_batch_job_result","params":{"batch_id":"20"},"jsonrpc":"2.0","id":1}' \
    http://localhost:5000/ | jq

I get this output before:

{
  "error": {
    "code": -32603,
    "message": "Unknown batch",
    "data": {
      "batch_id": "20"
    }
  },
  "id": 1,
  "jsonrpc": "2.0"
}

And now, this is the output I get:

{
  "error": {
    "code": -32601,
    "message": "Procedure 'get_batch_job_result' not found"
  }
}