Remove unnecessary wrapper method

Signed-off-by: Matheus Cruz <matheuscruz.dev@gmail.com>

Author: mcruzdev

impl/openapi/src/main/java/io/serverlessworkflow/impl/executors/openapi/OperationDefinition.java

@@ -57,11 +57,6 @@ List<String> getServers() {
   }
 
   List<ParameterDefinition> getParameters() {
-    return getOpenApiParameters();
-  }
-
-  private List<ParameterDefinition> getOpenApiParameters() {
-
     List<ParameterDefinition> paramDefinitions = new ArrayList<>();
     if (operation.hasParameters()) {
       for (UnifiedOpenAPI.Parameter parameter : operation.parameters()) {