调整下应用icon和名称

android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <application
-        android:label="japp_flutter"
+        android:label="JAPP"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity

lib/main.dart

@@ -1,6 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:flutter/foundation.dart';
-import 'package:intl/intl.dart';
 import 'package:japp_flutter/features/challenge/view_models/challenge_view_model.dart';
 import 'package:japp_flutter/features/challenge/views/challenge_view.dart';
 import 'package:provider/provider.dart';