Remove Unlink from asset reference

Source/Engine/Content/AssetReference.h

@@ -78,14 +78,6 @@ public:
         return _asset ? _asset->GetOrCreateManagedInstance() : nullptr;
     }
 
-    /// <summary>
-    /// Clears the asset reference.
-    /// </summary>
-    FORCE_INLINE void Unlink()
-    {
-        OnSet(nullptr);
-    }
-
     /// <summary>
     /// Gets the asset property value as string.
     /// </summary>
@@ -135,7 +127,7 @@ protected:
         if (_asset == asset)
         {
             Unload();
-            Unlink();
+            OnSet(nullptr);
         }
     }
 };

Source/Engine/Content/Assets/SkeletonMask.cpp

@@ -38,7 +38,7 @@ Asset::LoadResult SkeletonMask::load()
 
 void SkeletonMask::unload(bool isReloading)
 {
-    Skeleton.Unlink();
+    Skeleton = nullptr;
     _maskedNodes.Resize(0);
     _mask.Resize(0);
 }