Remove flutter ios command

All the functionality of this command has been integrated into other commands.

packages/flutter_tools/lib/executable.dart

@@ -19,7 +19,6 @@ import 'src/commands/create.dart';
 import 'src/commands/daemon.dart';
 import 'src/commands/devices.dart';
 import 'src/commands/install.dart';
-import 'src/commands/ios.dart';
 import 'src/commands/listen.dart';
 import 'src/commands/logs.dart';
 import 'src/commands/refresh.dart';
@@ -49,7 +48,6 @@ Future main(List<String> args) async {
     ..addCommand(new DaemonCommand(hideCommand: !verboseHelp))
     ..addCommand(new DevicesCommand())
     ..addCommand(new InstallCommand())
-    ..addCommand(new IOSCommand())
     ..addCommand(new ListenCommand())
     ..addCommand(new LogsCommand())
     ..addCommand(new RefreshCommand())

packages/flutter_tools/lib/src/commands/ios.dart

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import "dart:async";
-import "dart:io";
-
-import "../base/globals.dart";
-import "../runner/flutter_command.dart";
-import '../ios/setup_xcodeproj.dart';
-
-class IOSCommand extends FlutterCommand {
-  final String name = "ios";
-  final String description = "Commands for creating and updating Flutter iOS projects.";
-
-  IOSCommand() {
-    argParser.addFlag('init', help: 'Initialize the Xcode project for building the iOS application');
-  }
-
-  @override
-  Future<int> runInProject() async {
-    if (!Platform.isMacOS) {
-      printStatus("iOS specific commands may only be run on a Mac.");
-      return 1;
-    }
-
-    if (argResults['init'])
-      return await setupXcodeProjectHarness();
-
-    printError("No flags specified.");
-    return 1;
-  }
-}

packages/flutter_tools/lib/src/ios/device_ios.dart

@@ -541,7 +541,7 @@ bool _validateEngineRevision(ApplicationPackage app) {
   String iosRevision = _getIOSEngineRevision(app);
 
   if (iosRevision != skyRevision) {
-    printError("Error: incompatible sky_engine revision; please run 'flutter ios --init' to update.");
+    printError("Error: incompatible sky_engine revision.");
     printStatus('sky_engine revision: $skyRevision, iOS engine revision: $iosRevision');
     return false;
   } else {

packages/flutter_tools/lib/src/ios/setup_xcodeproj.dart

@@ -107,7 +107,6 @@ void _setupXcodeProjXcconfig(String filePath) {
   StringBuffer localsBuffer = new StringBuffer();
 
   localsBuffer.writeln('// This is a generated file; do not edit or check into version control.');
-  localsBuffer.writeln('// Recreate using `flutter ios --init`.');
 
   String flutterRoot = path.normalize(Platform.environment[kFlutterRootEnvironmentVariableName]);
   localsBuffer.writeln('FLUTTER_ROOT=$flutterRoot');