Gardening: fix issues with expectations for precomp-linux-product-x64.

tests/language/language.status

Index: tests/language/language.status
diff --git a/tests/language/language.status b/tests/language/language.status
index 143124b620a7eddb53689d9da3098fece96bb9b7..3597fcf5864f714c7e9d06e165fb1fbf35c8c3f6 100644
--- a/tests/language/language.status
+++ b/tests/language/language.status
@@ -10,11 +10,6 @@
 
 [$compiler == precompiler && $runtime == dart_precompiled ]
 stacktrace_demangle_ctors_test: RuntimeError
-vm/regress_27671_test: RuntimeError # Issue 30289
-export_double_same_main_test: Skip  # Crashes Issue 30289
-export_ambiguous_main_negative_test: Skip # Crashes Issue 30289
-vm/optimized_stacktrace_test: Skip # Crashes Issue 30289
-export_ambiguous_main_negative_test: Skip # Crashes Issue 30289
 
 [ ($runtime == vm || $runtime == flutter || $runtime == dart_precompiled) && $compiler != dartk && $compiler != dartkp ]
 abstract_beats_arguments2_test/01: Crash # Issue 29171
@@ -101,6 +96,7 @@ vm/unaligned_float_access_literal_index_test: Pass, Crash # Unaligned offset. Is
 [ ($compiler == none || $compiler == precompiler || $compiler == app_jit) && (($runtime == vm || $runtime == dart_precompiled)) && $arch == ia32 ]
 vm/regress_24517_test: Pass, Fail # Issue 24517.
 
+[ $compiler == precompiler && $runtime == dart_precompiled ]
 vm/regress_27671_test: Skip # Unsupported
 export_double_same_main_test: Skip # Issue 29895
 export_ambiguous_main_negative_test: Skip # Issue 29895