Why does flutter load 3rd party fonts? Inspecting my app in Chrome…

^^ the last two are loaded from Google.

Even after I specify only one font:

flutter:
  fonts:
     - family: NotoColorEmoji
       fonts:
         - asset: assets/fonts/Noto/NotoColorEmoji-Regular.ttf

and the application is simply

import 'package:flutter/material.dart';
import 'package:flutter/src/widgets/framework.dart';


void appMain(WidgetBuilder builder) {
  return runApp(content());
}

Widget content() {
  return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'NotoColorEmoji view',
      // Set Raleway as the default app font.
      theme: ThemeData(fontFamily: 'NotoColorEmoji'),
      home: Scaffold(
        body: Text("☝️⭐"), //const MyHomePage(),
      ));
}