remove invalid completions in method declaration param list

pkg/analysis_server/test/services/completion/optype_test.dart

Index: pkg/analysis_server/test/services/completion/optype_test.dart
diff --git a/pkg/analysis_server/test/services/completion/optype_test.dart b/pkg/analysis_server/test/services/completion/optype_test.dart
index a2634b1da84f1455fd080fd2b3c06678d6a03d9d..8acae697676476a2bdae3698d06d85ba76e3a540 100644
--- a/pkg/analysis_server/test/services/completion/optype_test.dart
+++ b/pkg/analysis_server/test/services/completion/optype_test.dart
@@ -478,7 +478,7 @@ class OpTypeTest {
   test_FormalParameterList() {
     // FormalParameterList MethodDeclaration
     addTestSource('class A {a(^) { }}');
-    assertOpType(returnValue: true, typeNames: true);
+    assertOpType(typeNames: true);
   }
 
   test_ForStatement_condition() {
@@ -1039,7 +1039,7 @@ class C2 {
   test_SimpleFormalParameter() {
     // SimpleIdentifier  SimpleFormalParameter  FormalParameterList
     addTestSource('mth() { PNGS.sort((String a, Str^) => a.compareTo(b)); }');
-    assertOpType(returnValue: true, typeNames: true);
+    assertOpType(typeNames: true);
   }
 
   test_SwitchCase() {