Improve semantics of parts.

tests/language/language_kernel.status

Index: tests/language/language_kernel.status
diff --git a/tests/language/language_kernel.status b/tests/language/language_kernel.status
index cf90280cd122b6dfe3094ddc57d5bf4f14b21bf3..8d873c4058948d053b476aafb1f4ff40bbb16f33 100644
--- a/tests/language/language_kernel.status
+++ b/tests/language/language_kernel.status
@@ -3,7 +3,6 @@
 # BSD-style license that can be found in the LICENSE file.
 
 [ $compiler == dartk || $compiler == dartkp ]
-application_negative_test: Crash
 arg_param_trailing_comma_test/107: MissingCompileTimeError
 await_for_test: RuntimeError
 bad_constructor_test/05: CompileTimeError
@@ -273,7 +272,6 @@ if_null_assignment_behavior_test/09: RuntimeError
 if_null_assignment_behavior_test/10: RuntimeError
 if_null_assignment_behavior_test/15: RuntimeError
 implicit_scope_test: Crash
-import_combinators_test: RuntimeError
 import_private_test/01: MissingCompileTimeError
 initializing_formal_capture_test: RuntimeError
 initializing_formal_final_test: RuntimeError
@@ -307,7 +305,6 @@ map_literal6_test: RuntimeError
 metadata_test: CompileTimeError
 method_name_test: CompileTimeError
 method_override_test: RuntimeError
-missing_part_of_tag_test/01: MissingCompileTimeError
 mixin_forwarding_constructor4_test/01: MissingCompileTimeError
 mixin_forwarding_constructor4_test/02: MissingCompileTimeError
 mixin_forwarding_constructor4_test/03: MissingCompileTimeError
@@ -360,7 +357,6 @@ not_enough_positional_arguments_test/02: MissingRuntimeError  # Dartk Issue 2830
 not_enough_positional_arguments_test/05: MissingRuntimeError  # Dartk Issue 28301
 on_catch_malformed_type_test: RuntimeError
 parameter_initializer6_negative_test: Fail
-part2_test: RuntimeError
 private_access_test/05: RuntimeError
 private_access_test/06: RuntimeError
 private_super_constructor_test/01: MissingCompileTimeError
@@ -387,8 +383,6 @@ regress_28217_test/none: MissingCompileTimeError
 regress_28278_test: RuntimeError  # Mirrors Issue
 runtime_type_function_test: RuntimeError
 scope_variable_test/01: MissingCompileTimeError
-script1_negative_test: Fail
-script2_negative_test: Fail
 setter4_test: CompileTimeError
 static_field3_test/03: CompileTimeError
 static_field3_test/04: CompileTimeError