HSEARCH-2219 Remove an unnecessary Elasticsearch mapping creation

The mappings are already created by a call to createMappings from
ElasticsearchIndexManager. Before this patch, the mappings were created,
and then updated with the exact same content.

elasticsearch/src/main/java/org/hibernate/search/elasticsearch/schema/impl/DefaultElasticsearchSchemaCreator.java

@@ -50,12 +50,6 @@ public void createIndex(IndexMetadata indexMetadata, ExecutionOptions executionO
 		schemaAccessor.createIndex( indexName, indexMetadata.getSettings(), executionOptions );
 
 		schemaAccessor.waitForIndexStatus( indexName, executionOptions );
-
-		for ( Map.Entry<String, TypeMapping> entry : indexMetadata.getMappings().entrySet() ) {
-			String mappingName = entry.getKey();
-			TypeMapping mapping = entry.getValue();
-			schemaAccessor.putMapping( indexName, mappingName, mapping );
-		}
 	}
 
 	@Override