Updating settings string to variable and removed unused code

Author: Samiul-TheSoccerFan

x-pack/plugin/inference/src/internalClusterTest/java/org/elasticsearch/xpack/inference/integration/SemanticTextIndexVersionIT.java

@@ -130,7 +130,7 @@ public void testSemanticText() throws Exception {
                     .get()
                     .getIndexToSettings()
                     .get(indexName)
-                    .getAsVersionId("index.version.created", IndexVersion::fromId)
+                    .getAsVersionId(IndexMetadata.SETTING_VERSION_CREATED, IndexVersion::fromId)
                     .id()
             );
 
@@ -166,13 +166,6 @@ public void testSemanticText() throws Exception {
                 response -> { assertHitCount(response, 1L); }
             );
 
-            Settings settings = client().admin()
-                .indices()
-                .prepareGetSettings(TimeValue.THIRTY_SECONDS, indexName)
-                .get()
-                .getIndexToSettings()
-                .get(indexName);
-
             // Semantic Search with highlighter
             SearchSourceBuilder sourceHighlighterBuilder = new SearchSourceBuilder().query(
                 new SemanticQueryBuilder("semantic_field", "inference")