fix gradle script bug

Flutter/android/build.gradle

@@ -48,7 +48,7 @@ android {
     dependencies {
         compileOnly 'androidx.annotation:annotation:1.2.0'
         //此处仅处理因插件项目内报红显示的处理方式
-        compileOnly files("$flutterRoot/bin/cache/artifacts/engine/android-arm/flutter.jar")
+//        compileOnly files("$flutterRoot/bin/cache/artifacts/engine/android-arm/flutter.jar")
     }
 }