remove code-transformers from the repo

pkg/pkg.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # Don't run any test-like files that show up in packages directories. It
 # shouldn't be necessary to run "pub install" in these packages, but if you do
 # it shouldn't break the tests.
 */packages/*/*: Skip
 */*/packages/*/*: Skip
 */*/*/packages/*/*: Skip
@@ skipping 14 matching lines @@
 [ $runtime == vm && $mode == debug]
 analysis_server/test/analysis_server_test: Skip  # Times out
 analysis_server/test/completion_test: Skip  # Times out
 analysis_server/test/domain_context_test: Skip  # Times out
 analysis_server/test/domain_server_test: Skip  # Times out
 analysis_server/test/integration/analysis/reanalyze_concurrent_test: Skip # Times out
 analysis_server/test/integration/analysis/update_content_test: Skip # Times out
 analysis_server/tool/spec/check_all_test: Skip # Times out
 analyzer/test/generated/element_test: Skip  # Times out
 analyzer/test/generated/parser_test: Skip  # Times out
-code_transformers/test/resolver_test: Skip  # Times out
 docgen/test/*: Skip # Slow
 third_party/html5lib/test/tokenizer_test: Skip  # Times out
 barback/test/package_graph/repetition_test: Skip  # Times out
 
 [ $runtime == vm && ( $arch == simarm || $arch == simmips ) ]
 barback/test/too_many_open_files_test: Skip # 14220
-code_transformers/test/resolver_test: Skip # Issue 17908
 docgen/test/*: Skip # Too slow
 third_party/html5lib/test/tokenizer_test: Pass, Slow
 analysis_server/*: Skip # Timeout in some tests.
 
 [ $compiler == dart2js ]
 collection/test/equality_test/01: Fail # Issue 1533
 collection/test/equality_test/02: Fail # Issue 1533
 collection/test/equality_test/03: Fail # Issue 1533
 collection/test/equality_test/04: Fail # Issue 1533
 collection/test/equality_test/05: Fail # Issue 1533
 collection/test/equality_test/none: Pass, Fail # Issue 14348
 docgen/test/*: Skip # Far too slow
 third_party/angular_tests/browser_test: Pass, Slow # Large dart2js compile time
 typed_data/test/typed_buffers_test/01: Fail # Not supporting Int64List, Uint64List.
 analyzer/test/generated/engine_test: Skip # Slow
 analyzer/test/generated/static_type_warning_code_test: Pass, Slow
 analyzer/test/generated/compile_time_error_code_test: Pass, Slow
 
 analyzer/test/enum_test: Fail # Issue 21323
 
 analysis_server/test/search/element_references_test: Pass, Slow
 analysis_server/test/services/index/store/codec_test: Pass, Slow
 analysis_server/test/edit/assists_test: Pass, Slow
 
 # Analysis server integration tests don't make sense to run under
 # dart2js, since the code under test always runs in the Dart vm as a
 # subprocess.
 analysis_server/test/integration: Skip
 
-code_transformers/test/unique_message_test: Skip # Intended only as a vm test.
-
 [ $compiler == dart2js && $checked ]
 crypto/test/base64_test: Slow, Pass
 
 
 [ $compiler == dart2js && $runtime == drt ]
 third_party/angular_tests/browser_test/core_dom/shadow_root_options: Fail # Issue 19329
 
 [ $compiler == dart2js && $csp && $runtime == drt ]
 web_components/test/interop_test: Fail # Issue 19329
 
@@ skipping 94 matching lines @@
 
 [ $compiler == dart2js && $runtime == chromeOnAndroid ]
 intl/test/date_time_format_http_request_test: Fail # TODO(kasperl): Please triage.
 
 [ $browser ]
 analysis_server/test/*: Skip # Uses dart:io.
 analysis_server/tool/spec/check_all_test: Skip # Uses dart:io.
 analyzer2dart/*: Skip # Uses dart:io.
 analyzer/test/*: Skip # Uses dart:io.
 barback/test/*: Fail, OK # Uses dart:io.
-code_transformers/test/assets_test: Skip # Uses dart:io
-code_transformers/test/entry_point_test: Skip # Uses dart:io
-code_transformers/test/resolver_test: Skip # Uses dart:io
-code_transformers/test/unique_message_test: Skip # Uses dart:io
-code_transformers/test/remove_sourcemap_comment_test: Skip # Uses dart:io.
 http/test/io/*: Fail, OK # Uses dart:io.
 http_server/test/*: Fail, OK # Uses dart:io.
 intl/test/date_time_format_file_even_test: Fail, OK # Uses dart:io.
 intl/test/date_time_format_file_odd_test: Fail, OK # Uses dart:io.
 intl/test/find_default_locale_standalone_test: Fail, OK # Uses dart:io.
 intl/test/message_extraction/examples_parsing_test: Fail, OK # Users dart:io
 intl/test/message_extraction/failed_extraction_test: Fail, OK # Users dart:io
 intl/test/message_extraction/message_extraction_test: Fail, OK # Uses dart:io.
 intl/test/message_extraction/message_extraction_no_deferred_test: Fail, OK # Uses dart:io.
 intl/test/message_extraction/really_fail_extraction_test: Fail, OK # Users dart:io
@@ skipping 78 matching lines @@
 third_party/angular_tests/browser_test/core/scope: Skip # Requires checked mode.
 third_party/angular_tests/browser_test/core/zone: Skip # Requires checked mode.
 third_party/angular_tests/browser_test/directive/ng_repeat: Skip # Issue 17152
 third_party/angular_tests/browser_test/change_detection/dirty_checking_change_detector: Skip # Issue 17152
 
 [ $use_repository_packages ]
 analyzer/test/*: PubGetError
 
 [ $runtime == drt ]
 http/test/html/client_test: Skip # Issue 18566