dev_compiler: Remove unnecessary imports

Bug: #44569
Change-Id: Icad2908772eb42593c0149a99b8256d470490670
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/177241
Reviewed-by: Sigmund Cherem <[email protected]>
Reviewed-by: Nicholas Shahan <[email protected]>
Commit-Queue: Samuel Rawlins <[email protected]>

Author: srawlins

pkg/dev_compiler/lib/src/kernel/expression_compiler.dart

@@ -15,7 +15,6 @@ import 'package:dev_compiler/dev_compiler.dart';
 import 'package:dev_compiler/src/js_ast/js_ast.dart' as js_ast;
 import 'package:dev_compiler/src/kernel/compiler.dart';
 
-import 'package:front_end/src/api_prototype/compiler_options.dart';
 import 'package:front_end/src/api_unstable/ddc.dart';
 
 import 'package:kernel/ast.dart'

pkg/dev_compiler/lib/src/kernel/expression_compiler_worker.dart

@@ -8,12 +8,8 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:_fe_analyzer_shared/src/messages/diagnostic_message.dart';
-import 'package:_fe_analyzer_shared/src/messages/severity.dart';
 import 'package:args/args.dart';
 import 'package:build_integration/file_system/multi_root.dart';
-import 'package:front_end/src/api_prototype/compiler_options.dart';
-import 'package:front_end/src/api_prototype/experimental_flags.dart';
 import 'package:front_end/src/api_prototype/file_system.dart';
 import 'package:front_end/src/api_unstable/ddc.dart';
 import 'package:kernel/ast.dart' show Component, Library;

pkg/dev_compiler/test/expression_compiler/expression_compiler_test.dart

@@ -10,8 +10,6 @@ import 'package:cli_util/cli_util.dart';
 import 'package:dev_compiler/dev_compiler.dart';
 import 'package:dev_compiler/src/compiler/module_builder.dart';
 import 'package:front_end/src/api_unstable/ddc.dart';
-import 'package:front_end/src/api_prototype/compiler_options.dart'
-    show CompilerOptions;
 import 'package:front_end/src/compute_platform_binaries_location.dart';
 import 'package:front_end/src/fasta/incremental_serializer.dart';
 import 'package:kernel/ast.dart' show Component, Library;

pkg/dev_compiler/test/expression_compiler/scope_offset_test.dart

@@ -5,7 +5,6 @@
 // @dart = 2.9
 
 import 'package:dev_compiler/src/kernel/expression_compiler.dart';
-import 'package:front_end/src/api_prototype/standard_file_system.dart';
 import 'package:front_end/src/api_unstable/ddc.dart';
 import 'package:front_end/src/compute_platform_binaries_location.dart';
 import 'package:kernel/ast.dart';

pkg/dev_compiler/test/sourcemap/common.dart

@@ -4,8 +4,6 @@
 
 // @dart = 2.9
 
-import 'dart:async' show Future;
-
 import 'dart:io';
 
 import 'package:_fe_analyzer_shared/src/testing/annotated_code_helper.dart';

pkg/dev_compiler/test/sourcemap/sourcemaps_ddk_suite.dart

@@ -4,7 +4,6 @@
 
 // @dart = 2.9
 
-import 'dart:async';
 import 'dart:io';
 
 import 'package:dev_compiler/src/kernel/command.dart';

pkg/dev_compiler/test/worker/worker_test.dart

@@ -9,8 +9,6 @@ import 'dart:convert';
 import 'dart:io';
 
 import 'package:bazel_worker/bazel_worker.dart';
-// TODO(jakemac): Remove once this is a part of the testing library.
-import 'package:bazel_worker/src/async_message_grouper.dart';
 import 'package:bazel_worker/testing.dart';
 import 'package:path/path.dart' show dirname, join, joinAll;
 import 'package:test/test.dart';