Remove section that's already included in the template (facebook#788)

The `AppDelegate.m` template already has the changes mentioned in the 3rd section, so this step is unnecessary in the documentation.

Author: gzzo

docs/running-on-device.md

@@ -348,42 +348,26 @@ To configure your app to be built using the `Release` scheme, go to **Product**
 
 ![](/react-native/docs/assets/ConfigureReleaseScheme.png)
 
-### 3. Configure app to use static bundle
+#### Pro Tips
 
-During the development process, React Native has loaded your JavaScript code dynamically at runtime. For a production build, you want to pre-package the JavaScript bundle and distribute it inside your application. Doing this requires a code change in your code so that it knows to load the static bundle.
-
-In `AppDelegate.m`, change `jsCodeLocation` to point to the static bundle if you're not in debug mode.
+As your App Bundle grows in size, you may start to see a white screen flash between your splash screen and the display of your root application view. If this is the case, you can add the following code to `AppDelegate.m` in order to keep your splash screen displayed during the transition.
 
 ```objc
-#ifdef DEBUG
-  jsCodeLocation = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index" fallbackResource:nil];
-#else
-  jsCodeLocation = [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
-#endif
+  // Place this code after "[self.window makeKeyAndVisible]" and before "return YES;"
+  UIView* launchScreenView = [[[NSBundle mainBundle] loadNibNamed:@"LaunchScreen" owner:self options:nil] objectAtIndex:0];
+  launchScreenView.frame = self.window.bounds;
+  rootView.loadingView = launchScreenView;
 ```
 
-This will now reference the `main.jsbundle` resource file that is created during the `Bundle React Native code and images` Build Phase in Xcode.
-
-> Note: The static bundle is built every time you target a physical device, even in Debug. If you want to save time, turn off bundle generation in Debug by adding the following to your shell script in the Xcode Build Phase `Bundle React Native code and images`:
+The static bundle is built every time you target a physical device, even in Debug. If you want to save time, turn off bundle generation in Debug by adding the following to your shell script in the Xcode Build Phase `Bundle React Native code and images`:
 
 ```shell
  if [ "${CONFIGURATION}" == "Debug" ]; then
   export SKIP_BUNDLING=true
  fi
 ```
 
-#### Pro Tip
-
-As your App Bundle grows in size, you may start to see a white screen flash between your splash screen and the display of your root application view. If this is the case, you can add the following code to `AppDelegate.m` in order to keep your splash screen displayed during the transition.
-
-```objc
-  // Place this code after "[self.window makeKeyAndVisible]" and before "return YES;"
-  UIView* launchScreenView = [[[NSBundle mainBundle] loadNibNamed:@"LaunchScreen" owner:self options:nil] objectAtIndex:0];
-  launchScreenView.frame = self.window.bounds;
-  rootView.loadingView = launchScreenView;
-```
-
-### 4. Build app for release
+### 3. Build app for release
 
 You can now build your app for release by tapping `⌘B` or selecting **Product** → **Build** from the menu bar. Once built for release, you'll be able to distribute the app to beta testers and submit the app to the App Store.