Update dartk status file.

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 98ed9bca6d35a6256450261fe5d98078a423a3f8..fe1ddabe0975423369bb08a0d5398fa74d220e7d 100644
--- a/tests/language/language_kernel.status
+++ b/tests/language/language_kernel.status
@@ -7,8 +7,6 @@
 large_class_declaration_test: Skip
 large_implicit_getter_test: Skip
 larger_implicit_getter_test: Skip
-null_is_bottom_test/22: RuntimeError # Issue 28025
-null_is_bottom_test/34: RuntimeError # Issue 28025
 
 ###############################################################################
 # Dartk Entries
@@ -85,14 +83,6 @@ multiline_newline_test/05: MissingCompileTimeError
 multiline_newline_test/06: MissingCompileTimeError
 no_main_test/01: DartkCrash
 not_enough_positional_arguments_test/01: DartkCompileTimeError
-null_is_bottom_test/05: RuntimeError # Issue 28025
-null_is_bottom_test/07: RuntimeError # Issue 28025
-null_is_bottom_test/20: RuntimeError # Issue 28025
-null_is_bottom_test/25: RuntimeError # Issue 28025
-null_is_bottom_test/27: RuntimeError # Issue 28025
-null_is_bottom_test/32: RuntimeError # Issue 28025
-null_is_bottom_test/37: RuntimeError # Issue 28025
-null_is_bottom_test/39: RuntimeError # Issue 28025
 regress_27617_test/1: MissingCompileTimeError
 super_call3_test/01: DartkCrash
 type_variable_conflict2_test/02: MissingCompileTimeError