remove duplicate inference endpoint creation

Author: Samiul-TheSoccerFan

x-pack/plugin/inference/src/yamlRestTest/resources/rest-api-spec/test/inference/40_semantic_text_query.yml

@@ -1006,21 +1006,6 @@ setup:
 
 ---
 "Querying_inference_fields with semantic_text legacy format":
-  - do:
-      inference.put:
-        task_type: sparse_embedding
-        inference_id: sparse-inference-id
-        body: >
-          {
-            "service": "test_service",
-            "service_settings": {
-              "model": "my_model",
-              "api_key": "abc64"
-            },
-            "task_settings": {
-            }
-          }
-
   - do:
       indices.create:
         index: test-index