[ML] Hide deprecated APIs completely in serverless (#97408)

We have a couple of APIs that are deprecated:
- Infer trained model deployment (note the "deployment" part - we are not deprecating model inference!)
- Post anomaly detection job data

There should be no need for anybody to use these APIs in serverless,
even for internal debugging, so we can completely hide them in
serverless.

Author: David Roberts

x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/inference/RestInferTrainedModelDeploymentAction.java

@@ -14,8 +14,6 @@
 import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
-import org.elasticsearch.rest.Scope;
-import org.elasticsearch.rest.ServerlessScope;
 import org.elasticsearch.rest.action.RestCancellableNodeClient;
 import org.elasticsearch.rest.action.RestToXContentListener;
 import org.elasticsearch.xpack.core.ml.action.InferModelAction;
@@ -30,7 +28,6 @@
 import static org.elasticsearch.rest.RestRequest.Method.POST;
 import static org.elasticsearch.xpack.ml.MachineLearning.BASE_PATH;
 
-@ServerlessScope(Scope.INTERNAL)
 public class RestInferTrainedModelDeploymentAction extends BaseRestHandler {
 
     static final String PATH = BASE_PATH + "trained_models/{" + TrainedModelConfig.MODEL_ID.getPreferredName() + "}/deployment/_infer";

x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/rest/job/RestPostDataAction.java

@@ -10,8 +10,6 @@
 import org.elasticsearch.core.RestApiVersion;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestRequest;
-import org.elasticsearch.rest.Scope;
-import org.elasticsearch.rest.ServerlessScope;
 import org.elasticsearch.rest.action.RestStatusToXContentListener;
 import org.elasticsearch.xpack.core.ml.action.PostDataAction;
 import org.elasticsearch.xpack.core.ml.job.config.Job;
@@ -23,7 +21,6 @@
 import static org.elasticsearch.xpack.ml.MachineLearning.BASE_PATH;
 import static org.elasticsearch.xpack.ml.MachineLearning.PRE_V7_BASE_PATH;
 
-@ServerlessScope(Scope.INTERNAL)
 public class RestPostDataAction extends BaseRestHandler {
 
     private static final String DEFAULT_RESET_START = "";