Remove the Cucumber JUnit runners createRuntime method

Neither the runtime nor the backend or any of the classes involved in
their construction are part of the public API. As such they should not
be  exposed.

The recommended way to observe the cucumber process is to listen to
events by using a plugin. For example the JSONFormatter.

Author: mpkorstanje

junit/src/main/java/cucumber/api/junit/Cucumber.java

@@ -47,7 +47,7 @@
  * Additional hints can be given to Cucumber by annotating the class with {@link CucumberOptions}.
  * <p>
  * Cucumber also supports JUnits {@link ClassRule}, {@link BeforeClass} and {@link AfterClass} annotations.
- * These will executed before and after all scenarios. Using these is not recommended as it limits the portability
+ * These will be executed before and after all scenarios. Using these is not recommended as it limits the portability
  * between different runners; they may not execute correctly when using the commandline, IntelliJ IDEA or
  * Cucumber-Eclipse. Instead it is recommended to use Cucumbers `Before` and `After` hooks.
  *
@@ -75,34 +75,15 @@ public Cucumber(Class clazz) throws InitializationError, IOException {
         RuntimeOptions runtimeOptions = runtimeOptionsFactory.create();
 
         ResourceLoader resourceLoader = new MultiLoader(classLoader);
-        runtime = createRuntime(resourceLoader, classLoader, runtimeOptions);
+        ClassFinder classFinder = new ResourceLoaderClassFinder(resourceLoader, classLoader);
+        runtime = new Runtime(resourceLoader, classFinder, classLoader, runtimeOptions);
         formatter = runtimeOptions.formatter(classLoader);
         final JUnitOptions junitOptions = new JUnitOptions(runtimeOptions.getJunitOptions());
         final List<CucumberFeature> cucumberFeatures = runtimeOptions.cucumberFeatures(resourceLoader, runtime.getEventBus());
         jUnitReporter = new JUnitReporter(runtime.getEventBus(), runtimeOptions.isStrict(), junitOptions);
         addChildren(cucumberFeatures);
     }
 
-    /**
-     * Create the Runtime. Can be overridden to customize the runtime or backend.
-     *
-     * @param resourceLoader used to load resources
-     * @param classLoader    used to load classes
-     * @param runtimeOptions configuration
-     * @return a new runtime
-     * @throws InitializationError if a JUnit error occurred
-     * @throws IOException         if a class or resource could not be loaded
-     * @deprecated Neither the runtime nor the backend or any of the classes involved in their construction are part of
-     * the public API. As such they should not be  exposed. The recommended way to observe the cucumber process is to
-     * listen to events by using a plugin. For example the JSONFormatter.
-     */
-    @Deprecated
-    protected Runtime createRuntime(ResourceLoader resourceLoader, ClassLoader classLoader,
-                                    RuntimeOptions runtimeOptions) throws InitializationError, IOException {
-        ClassFinder classFinder = new ResourceLoaderClassFinder(resourceLoader, classLoader);
-        return new Runtime(resourceLoader, classFinder, classLoader, runtimeOptions);
-    }
-
     @Override
     public List<FeatureRunner> getChildren() {
         return children;