chore: remove unnecessary comments about stream_channel dependency

Author: PabloTortosaLopez

test/src/mcp/mcp_command_test.dart

@@ -3,8 +3,6 @@ import 'dart:async';
 import 'package:dart_mcp/server.dart';
 import 'package:mason/mason.dart';
 import 'package:mocktail/mocktail.dart';
-// Note: stream_channel is a transitive dependency via dart_mcp
-// ignore: depend_on_referenced_packages
 import 'package:stream_channel/stream_channel.dart';
 import 'package:test/test.dart';
 import 'package:very_good_cli/src/mcp/mcp_command.dart';

test/src/mcp/mcp_server_test.dart

@@ -5,8 +5,6 @@ import 'package:args/command_runner.dart';
 import 'package:dart_mcp/server.dart';
 import 'package:mason/mason.dart';
 import 'package:mocktail/mocktail.dart';
-// Note: stream_channel is a transitive dependency via dart_mcp
-// ignore: depend_on_referenced_packages
 import 'package:stream_channel/stream_channel.dart';
 import 'package:test/test.dart';
 import 'package:very_good_cli/src/command_runner.dart';