Remove dart2dart support from testing scripts and status files

tests/lib/lib.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.
 
 [ $unchecked ]
 mirrors/redirecting_factory_different_type_test: SkipByDesign # Tests type checks.
 
 [ $csp ]
 # Deferred loading does not work from an isolate in CSP-mode
 async/deferred/deferred_in_isolate_test: Skip # Issue 16898
@@ skipping 175 matching lines @@
 
 [ $compiler == dart2js && ( $browser || $runtime == d8 ) ]
 async/timer_not_available_test: Fail, OK # only meant to test when there is no way to
                                          # implement timer (currently only in jsshell)
 
 # 'js' tests import the dart:js library, so they only make sense in
 # a browser environment.
 [ $runtime == vm ]
 js/*: Skip
 
-[ $compiler == dart2dart ]
-mirrors/*: Skip # Issue 11511
-async/schedule_microtask6_test: Fail             # Issue 10957 - may be related to issue 10910
-
-[ $compiler == dart2dart && $minified ]
-convert/json_lib_test: Fail # Issue 10961
-
 [ $compiler == dart2js && $minified ]
 mirrors/mirrors_used_get_name_test: RuntimeError
 mirrors/mirrors_used_get_name2_test: RuntimeError
 
 [ $runtime == ff ]
 # FF setTimeout can fire early: https://bugzilla.mozilla.org/show_bug.cgi?id=291386
 convert/streamed_conversion_utf8_decode_test: Pass, Slow  # Issue 12029
 mirrors/mirrors_reader_test: Timeout, Slow, RuntimeError # Issue 16589
 
 [ $runtime == chrome && $system == macos ]
@@ skipping 56 matching lines @@
 async/slow_consumer3_test: SkipSlow # Times out flakily. Issue 20956
 async/slow_consumer2_test: SkipSlow # Times out flakily. Issue 20956
 convert/streamed_conversion_utf8_encode_test: SkipSlow # Times out or passes. Issue 19127
 convert/streamed_conversion_utf8_decode_test: SkipSlow # Times out or passes. Issue 19127
 mirrors/lazy_static_test: SkipSlow # Times out. Issue 19127
 mirrors/mirrors_reader_test: SkipSlow # Times out. Issue 19127
 
 [ $compiler == dart2js && $runtime == safarimobilesim ]
 mirrors/mirrors_reader_test: SkipSlow # Times out. Issue 20806.
 
-[ $compiler == dart2dart ]
-# Deferred loading is not supported by dart2dart.
-async/deferred/deferred_in_isolate_test: Skip # Issue 17523
-
 [ $compiler == none && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
 # Dart vm does not support spawn from a dom-enabled isolate.
 async/deferred/deferred_in_isolate_test: RuntimeError # Issue 16209
 
 [ $compiler == dart2js && $runtime == jsshell ]
 async/schedule_microtask_test: Fail  # Preamble file does not correctly implement scheduleImmediate.
 
 [ $compiler == dartanalyzer || $compiler == dart2analyzer ]
 mirrors/generic_f_bounded_mixin_application_test: StaticWarning # Test Issue
 
@@ skipping 554 matching lines @@
 typed_data/setRange_3_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator
 typed_data/setRange_4_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator
 typed_data/setRange_5_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator
 typed_data/simd_store_to_load_forward_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator
 typed_data/typed_data_hierarchy_int64_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator
 typed_data/typed_data_hierarchy_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator
 typed_data/typed_data_list_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator
 typed_data/typed_data_load2_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator
 typed_data/typed_data_sublist_type_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator
 typed_data/typed_list_iterable_test: Crash # Instance of 'TypeOperator': unimplemented in CodeGenerator