update language_dart2js.status for --cps-ir ??= tests

tests/language/language_dart2js.status

Index: tests/language/language_dart2js.status
diff --git a/tests/language/language_dart2js.status b/tests/language/language_dart2js.status
index 78bf448f163663d78a5ea8948ce84cb07ba1765a..e21a4739eea1bdf78d6ad0f7940f38e29038578a 100644
--- a/tests/language/language_dart2js.status
+++ b/tests/language/language_dart2js.status
@@ -393,19 +393,6 @@ generic2_test: RuntimeError # Please triage this failure.
 generic_field_mixin3_test: RuntimeError # Please triage this failure.
 generic_instanceof_test: RuntimeError # Please triage this failure.
 generic_native_test: RuntimeError # Please triage this failure.
-if_null_assignment_behavior_test/28: RuntimeError # Please triage this failure.
-if_null_assignment_static_test/01: RuntimeError # v0.get$a is not a function
-if_null_assignment_static_test/03: RuntimeError # v0.get$a is not a function
-if_null_assignment_static_test/04: RuntimeError # v0.get$b is not a function
-if_null_assignment_static_test/05: RuntimeError # v0.get$a is not a function
-if_null_assignment_static_test/29: RuntimeError # v0.get$a is not a function
-if_null_assignment_static_test/31: RuntimeError # v0.get$a is not a function
-if_null_assignment_static_test/32: RuntimeError # v0.get$b is not a function
-if_null_assignment_static_test/33: RuntimeError # v0.get$a is not a function
-if_null_assignment_static_test/36: RuntimeError # v0.get$a is not a function
-if_null_assignment_static_test/38: RuntimeError # v0.get$a is not a function
-if_null_assignment_static_test/39: RuntimeError # v0.get$b is not a function
-if_null_assignment_static_test/40: RuntimeError # v0.get$a is not a function
 infinite_switch_label_test: Crash # (switch (target){l0:...  continue to a labeled switch case
 instance_creation_in_function_annotation_test: Crash # (static Iterable<Str...  cannot handle sync*/async* functions
 instanceof2_test: RuntimeError # Please triage this failure.