support deleting data from the list

Author: Andrew Beckman

src/SortableList.js

@@ -111,21 +111,13 @@ export default class SortableList extends Component {
         });
       });
 
-      if (Object.keys(nextData).length > Object.keys(data).length) {
-        this.setState({
-          animated: false,
-          data: nextData,
-          containerLayout: null,
-          rowsLayouts: null,
-          order: nextOrder
-        });
-      } else {
-        this.setState({
-          data: nextData,
-          order: nextOrder
-        });
-      }
-
+      this.setState({
+        animated: false,
+        data: nextData,
+        containerLayout: null,
+        rowsLayouts: null,
+        order: nextOrder
+      });
     } else if (order && nextOrder && !shallowEqual(order, nextOrder)) {
       this.setState({order: nextOrder});
     }