Remove failures

pkg/dev_compiler/test/browser/language_tests.js

Index: pkg/dev_compiler/test/browser/language_tests.js
diff --git a/pkg/dev_compiler/test/browser/language_tests.js b/pkg/dev_compiler/test/browser/language_tests.js
index 053fd414399c7d32b008c609d6b650bd6dc32c1c..534e9e4d60f00dafc550be71dbe9527dcf99f5e1 100644
--- a/pkg/dev_compiler/test/browser/language_tests.js
+++ b/pkg/dev_compiler/test/browser/language_tests.js
@@ -194,11 +194,6 @@ define(['dart_sdk', 'async_helper', 'expect', 'unittest', 'is', 'require'],
       'regress_22777_test': flaky,
       'stack_overflow_stacktrace_test': fail,
       'stack_overflow_test': fail,
-
-      // https://github.com/dart-lang/sdk/issues/30075
-      'stacktrace_rethrow_error_test_withtraceparameter_multi': fail,
-      'stacktrace_rethrow_nonerror_test': fail,
-
       'stacktrace_test': chrome_fail,
       'string_interpolate_null_test': fail,
       'switch_label2_test': fail,