Fix existing DUPLICATE_IMPORT diagnostics. (#104533)

Author: scheglov

packages/flutter_tools/lib/src/android/android_device.dart

@@ -7,8 +7,6 @@ import 'dart:async';
 import 'package:meta/meta.dart';
 import 'package:process/process.dart';
 
-import '../android/android_builder.dart';
-import '../android/android_sdk.dart';
 import '../application_package.dart';
 import '../base/common.dart' show throwToolExit;
 import '../base/file_system.dart';
@@ -24,6 +22,7 @@ import '../project.dart';
 import '../protocol_discovery.dart';
 
 import 'android.dart';
+import 'android_builder.dart';
 import 'android_console.dart';
 import 'android_sdk.dart';
 import 'application_package.dart';

packages/flutter_tools/lib/src/android/android_emulator.dart

@@ -7,8 +7,6 @@ import 'dart:async';
 import 'package:meta/meta.dart';
 import 'package:process/process.dart';
 
-import '../android/android_sdk.dart';
-import '../android/android_workflow.dart';
 import '../base/file_system.dart';
 import '../base/io.dart';
 import '../base/logger.dart';
@@ -17,6 +15,7 @@ import '../convert.dart';
 import '../device.dart';
 import '../emulator.dart';
 import 'android_sdk.dart';
+import 'android_workflow.dart';
 
 class AndroidEmulators extends EmulatorDiscovery {
   AndroidEmulators({