Remove isolate_throws_test.

tests/isolate/isolate.status

Index: tests/isolate/isolate.status
diff --git a/tests/isolate/isolate.status b/tests/isolate/isolate.status
index 7ac6cf008f7e59cb082584e32b608fdba9bf8c36..1f685bfb8043ae0de77c8309dc951962604d8cc8 100644
--- a/tests/isolate/isolate.status
+++ b/tests/isolate/isolate.status
@@ -11,7 +11,6 @@ mandel_isolate_test: Skip # Uses 600 MB Ram on our 1 GB test device.
 
 [ $compiler == none || $compiler == dart2dart ]
 serialization_test: SkipByDesign # Tests dart2js-specific serialization code
-isolate_throws_test/01: Skip # Issue 12587
 compile_time_error_test/01: Skip # Issue 12587
 capability_test: Fail   # Not implemented yet
 pause_test: Fail        # Not implemented yet
@@ -35,7 +34,6 @@ pause_test: Fail  # non-zero timer not supported.
 
 [ $compiler == dart2js ]
 serialization_test: RuntimeError # Issue 1882, tries to access class TestingOnly declared in isolate_patch.dart
-isolate_throws_test/01: Fail, OK # Issue 12588. Dart2js no longer dies when an isolate throws.
 
 [ $compiler == dart2js && $runtime == ie9 ]
 browser/typed_data_message_test: Fail # Issue 12624
@@ -91,7 +89,6 @@ isolate_stress_test: Skip # Issue 14463
 [ $compiler == none && ( $runtime == dartium || $runtime == drt ) ]
 compile_time_error_test/none: Fail, OK # Issue 13921 Dom isolates don't support spawnFunction
 isolate_import_test/none: Fail, OK # Issue 13921 Dom isolates don't support spawnFunction
-isolate_throws_test/none: Fail, OK # Issue 13921 Dom isolates don't support spawnFunction
 simple_message_test/none: Fail, OK # Issue 13921 Dom isolates don't support spawnFunction
 
 [ $compiler == dartanalyzer || $compiler == dart2analyzer ]