[strong] Refactor out separate strong runtime call for class objects

src/full-codegen/arm64/full-codegen-arm64.cc

Index: src/full-codegen/arm64/full-codegen-arm64.cc
diff --git a/src/full-codegen/arm64/full-codegen-arm64.cc b/src/full-codegen/arm64/full-codegen-arm64.cc
index 655790a10b3d4675f961f084ea9c82373f20e78a..678471d0c996747b5d3f806af1b57134a22b3d65 100644
--- a/src/full-codegen/arm64/full-codegen-arm64.cc
+++ b/src/full-codegen/arm64/full-codegen-arm64.cc
@@ -2270,10 +2270,7 @@ void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit,
 
   // Set both the prototype and constructor to have fast properties, and also
   // freeze them in strong mode.
-  __ CallRuntime(is_strong(language_mode())
-                     ? Runtime::kFinalizeClassDefinitionStrong
-                     : Runtime::kFinalizeClassDefinition,
-                 2);
+  __ CallRuntime(Runtime::kFinalizeClassDefinition, 2);
 }