Remove obsolete references to "flutter refresh" in hello_services (#7093)

Fixes https://github.com/flutter/flutter/issues/6947

examples/hello_services/README.md

@@ -67,23 +67,3 @@ To build directly with `gradle`, use the following commands:
 
 To build with Android Studio, open the `android` folder in Android Studio and
 build the project as usual.
-
-### Updating the Dart code
-
-You can push new Dart code to a Flutter app during development without performing
-a full rebuild of the Android app package.
-
-The `flutter refresh` tool manages this process.  `flutter refresh` will build
-a snapshot of an app's Dart code, copy it to an Android device, and send an
-intent instructing the Android app to load the snapshot.
-
-To try this out:
-
- * Install and run the app on your device
- * Edit the Dart code
- * `flutter refresh --activity com.example.flutter/.ExampleActivity`
-
-`flutter refresh` sends an `ACTION_RUN` intent with an extra containing the
-device filesystem path where the snapshot was copied. `ExampleActivity.java`
-shows how an activity can handle this intent and load the new snapshot into
-a FlutterView.

examples/hello_services/android/app/src/main/java/com/example/flutter/ExampleActivity.java

@@ -76,20 +76,6 @@ public class ExampleActivity extends Activity {
         flutterView.onPostResume();
     }
 
-    @Override
-    protected void onNewIntent(Intent intent) {
-        // Reload the Flutter Dart code when the activity receives an intent
-        // from the "flutter refresh" command.
-        // This feature should only be enabled during development.  Use the
-        // debuggable flag as an indicator that we are in development mode.
-        if ((getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
-            if (Intent.ACTION_RUN.equals(intent.getAction())) {
-                flutterView.runFromBundle(intent.getDataString(),
-                                          intent.getStringExtra("snapshot"));
-            }
-        }
-    }
-
     private void sendGetRandom() {
         JSONObject message = new JSONObject();
         try {