remove demo unused code

Author: shshjing

Example/VPInterfaceControllerDemo/AppDelegate.m

@@ -28,8 +28,8 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
     version = [version stringByAppendingString:@"_"];
     version = [version stringByAppendingString: [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *) kCFBundleVersionKey]];
     [MobClick setAppVersion:version];
-    [VPIConfigSDK setAppKey:@"921ac192-a38b-4b09-905d-e0c352ec624a" appSecret:@"6cc1f566c36e4165"];
-    [[VPUPDebugSwitch sharedDebugSwitch] switchEnvironment:VPUPDebugStateTest];
+    [VPIConfigSDK setAppKey:@"ca39f6b6-4626-4036-8518-59387636da60" appSecret:@"8e9db127a2644fba"];
+//    [[VPUPDebugSwitch sharedDebugSwitch] switchEnvironment:VPUPDebugStateTest];
     [VPIConfigSDK initSDK];
     return YES;
 }

Example/VPInterfaceControllerDemo/Resources/config.json

@@ -18,6 +18,7 @@
                       ],
     "room_id": [
                 "https://static.videojj.com/online/video/Team%20Video%2B%2B_We_Are_Young.mp4",
+                "http://qa-video.oss-cn-beijing.aliyuncs.com/ai/buRan.mp4",
                 "http://qa-video.oss-cn-beijing.aliyuncs.com/mp4/victoria90s.mp4",
                 "http://qa-video.oss-cn-beijing.aliyuncs.com/mp4/mby02.mp4",
                 "http://qa-video.oss-cn-beijing.aliyuncs.com/mp4/shn48.mp4",