Get rid of o_isClass

hphp/runtime/base/object_data.cpp

@@ -122,10 +122,6 @@ bool ObjectData::o_instanceof(CStrRef s) const {
   return m_cls->classof(cls);
 }
 
-bool ObjectData::o_isClass(const char *s) const {
-  return strcasecmp(s, o_getClassName().c_str()) == 0;
-}
-
 int64_t ObjectData::o_toInt64() const {
   raise_notice("Object of class %s could not be converted to int",
                o_getClassName().data());

hphp/runtime/base/object_data.h

@@ -142,7 +142,6 @@ class ObjectData : public CountableNF {
   CStrRef o_getParentName() const;
   virtual CStrRef o_getClassNameHook() const;
   virtual bool isResource() const { return false;}
-  bool o_isClass(const char *s) const;
   int o_getId() const { return o_id;}
 
   // overridable casting

hphp/runtime/base/type_object.cpp

@@ -82,7 +82,7 @@ bool Object::equal(CObjRef v2) const {
   if (isResource() || v2.isResource()) {
     return false;
   }
-  if (!v2.get()->o_isClass(m_px->o_getClassName().c_str())) {
+  if (v2.get()->getVMClass() != m_px->getVMClass()) {
     return false;
   }
   if (m_px->isCollection()) {