Fixed IModelData not being cleared when tile entity is removed (#6115)

src/main/java/net/minecraftforge/client/model/ModelDataManager.java

@@ -84,10 +84,14 @@ public class ModelDataManager
             for (BlockPos pos : needUpdate)
             {
                 TileEntity toUpdate = world.getTileEntity(pos);
-                if (toUpdate != null)
+                if (toUpdate != null && !toUpdate.isRemoved())
                 {
                     data.put(pos, toUpdate.getModelData());
                 }
+                else
+                {
+                    data.remove(pos);
+                }
             }
         }
     }