refactor CCBundle3DData (#19756)

* remove superfluous constructor and non-virtual destructor

destructor should be trivial if it doesn't manage resource. A vector
member clears itself automatically. No need to call `clear` in
destructor.

cocos/3d/CCBundle3DData.h

@@ -64,10 +64,8 @@ struct ModelData
     std::vector<std::string> bones;
     std::vector<Mat4>        invBindPose;
 
-    virtual ~ModelData()
-    {
-        resetData();
-    }
+    virtual ~ModelData() {}
+
     virtual void resetData()
     {
         bones.clear();
@@ -188,10 +186,6 @@ struct MeshData
     , attribCount(0)
     {
     }
-    ~MeshData()
-    {
-        resetData();
-    }
 };
 
 /** mesh datas 
@@ -326,7 +320,7 @@ struct NTextureData
      Usage type;
      GLenum wrapS;
      GLenum wrapT;
-} ;
+};
 struct NMaterialData
 {
     std::vector<NTextureData> textures;
@@ -440,14 +434,9 @@ struct Animation3DData
 */
 struct Reference
 {
-public:
     std::string id;
     unsigned int type;
     unsigned int offset;
-
-    Reference(){}
-
-    ~Reference(){}
 };
 
 NS_CC_END