Remove deleted language tests from VM stress test.

BUG=59713

Change-Id: I977f9001e822d0f4037efde8f505ab04916a8509
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/400500
Commit-Queue: Alexander Aprelev <[email protected]>
Auto-Submit: Bob Nystrom <[email protected]>
Reviewed-by: Alexander Aprelev <[email protected]>

runtime/tests/concurrency/stress_test_list.json

@@ -612,10 +612,8 @@
   "../../../tests/language/assert/assignable_type_test.dart",
   "../../../tests/language/assert/initializer_const_error2_runtime_test.dart",
   "../../../tests/language/assert/initializer_const_error_runtime_test.dart",
-  "../../../tests/language/assert/initializer_const_function_runtime_test.dart",
   "../../../tests/language/assert/initializer_test.dart",
   "../../../tests/language/assert/message_test.dart",
-  "../../../tests/language/assert/trailing_comma_runtime_test.dart",
   "../../../tests/language/assert/with_message_test.dart",
   "../../../tests/language/assert/with_type_test_or_cast_test.dart",
   "../../../tests/language/assign/instance_method_test.dart",
@@ -948,7 +946,6 @@
   "../../../tests/language/const/constructor_super2_test.dart",
   "../../../tests/language/const/constructor_super_runtime_test.dart",
   "../../../tests/language/const/constructor_syntax_runtime_test.dart",
-  "../../../tests/language/const/counter_runtime_test.dart",
   "../../../tests/language/const/ct_const_test.dart",
   "../../../tests/language/const/dynamic_type_literal_runtime_1_test.dart",
   "../../../tests/language/const/dynamic_type_literal_runtime_2_test.dart",
@@ -980,7 +977,6 @@
   "../../../tests/language/const/named_test.dart",
   "../../../tests/language/const/nested_test.dart",
   "../../../tests/language/const/objects_are_immutable_test.dart",
-  "../../../tests/language/const/optional_args_runtime_test.dart",
   "../../../tests/language/const/primitive_equality_test.dart",
   "../../../tests/language/const/qq_test.dart",
   "../../../tests/language/const/redirect_skips_supertype_test.dart",