chore: remove deprecated celery cli (#19273)

* chore: remove deprecated celery cli

* remove configs and UPDATING

UPDATING.md

@@ -29,6 +29,7 @@ assists people when migrating to a new version.
 
 ### Breaking Changes
 
+- [19273](https://github.com/apache/superset/pull/19273): The `SUPERSET_CELERY_WORKERS` and `SUPERSET_WORKERS` config keys has been removed. Configure celery directly using `CELERY_CONFIG` on Superset
 - [19231](https://github.com/apache/superset/pull/19231): The `ENABLE_REACT_CRUD_VIEWS` feature flag has been removed (permanently enabled). Any deployments which had set this flag to false will need to verify that the React views support their use case.
 - [17556](https://github.com/apache/superset/pull/17556): Bumps mysqlclient from v1 to v2
 - [19113](https://github.com/apache/superset/pull/19113): The `ENABLE_JAVASCRIPT_CONTROLS` setting has moved from app config to a feature flag. Any deployments who overrode this setting will now need to override the feature flag from here onward.

superset/config.py

@@ -140,8 +140,6 @@ def _try_json_readsha(filepath: str, length: int) -> Optional[str]:
 SAMPLES_ROW_LIMIT = 1000
 # max rows retrieved by filter select auto complete
 FILTER_SELECT_ROW_LIMIT = 10000
-SUPERSET_WORKERS = 2  # deprecated
-SUPERSET_CELERY_WORKERS = 32  # deprecated
 
 SUPERSET_WEBSERVER_PROTOCOL = "http"
 SUPERSET_WEBSERVER_ADDRESS = "0.0.0.0"