Remove dart migrate command.

Bug: #50319
Change-Id: I216a20afe8382eab5872672b2e01ed1daf7ac78d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/278367
Commit-Queue: Paul Berry <[email protected]>
Reviewed-by: Samuel Rawlins <[email protected]>
Reviewed-by: Devon Carew <[email protected]>

Author: stereotype441

pkg/dartdev/lib/dartdev.dart

@@ -26,7 +26,6 @@ import 'src/commands/doc.dart';
 import 'src/commands/fix.dart';
 import 'src/commands/info.dart';
 import 'src/commands/language_server.dart';
-import 'src/commands/migrate.dart';
 import 'src/commands/run.dart';
 import 'src/commands/test.dart';
 import 'src/core.dart';
@@ -131,7 +130,6 @@ class DartdevRunner extends CommandRunner<int> {
     addCommand(FormatCommand(verbose: verbose));
     addCommand(InfoCommand(verbose: verbose));
     addCommand(LanguageServerCommand(verbose: verbose));
-    addCommand(MigrateCommand(verbose: verbose));
     addCommand(
       pubCommand(
         analytics: PubAnalytics(

pkg/dartdev/lib/src/commands/migrate.dart

@@ -20,7 +20,6 @@ dependencies:
   dds: any
   front_end: any
   meta: any
-  nnbd_migration: any
   package_config: any
   path: any
   pub: any

pkg/dartdev/pubspec.yaml

@@ -25,7 +25,6 @@ void expectUsage(String msg) {
   expect(msg, contains('create '));
   expect(msg, contains('compile '));
   expect(msg, contains('format '));
-  expect(msg, contains('migrate '));
 }
 
 void command() {
@@ -134,7 +133,6 @@ void help() {
     expect(result.exitCode, 0);
     expect(result.stdout,
         contains('Usage: dart [vm-options] <command|dart-file> [arguments]'));
-    expect(result.stdout, contains('migrate '));
   });
 
   test('help -v', () async {
@@ -144,7 +142,6 @@ void help() {
     expect(result.exitCode, 0);
     expect(result.stdout,
         contains('Usage: dart [vm-options] <command|dart-file> [arguments]'));
-    expect(result.stdout, contains('migrate '));
   });
 }
 

pkg/dartdev/test/commands/flag_test.dart

@@ -14,7 +14,6 @@ import 'commands/format_test.dart' as format;
 import 'commands/help_test.dart' as help;
 import 'commands/info_test.dart' as info;
 import 'commands/language_server_test.dart' as language_server;
-import 'commands/migrate_test.dart' as migrate;
 import 'commands/pub_test.dart' as pub;
 import 'commands/run_test.dart' as run;
 import 'commands/test_test.dart' as test;
@@ -45,7 +44,6 @@ void main() {
     info.main();
     invalid_smoke.main();
     language_server.main();
-    migrate.main();
     no_such_file.main();
     pub.main();
     run.main();