revert: some dulp val #4839

Author: tangjinzhou

components/vc-tree-select/hooks/useTreeData.ts

@@ -79,7 +79,6 @@ function formatTreeData(
         selectable,
         dataRef: node,
         checkable,
-        selectable,
       };
 
       if (node.slots) {

components/vc-tree-select/interface.ts

@@ -24,7 +24,6 @@ export interface DataNode {
   checkable?: boolean;
   selectable?: boolean;
   children?: DataNode[];
-  selectable?: boolean;
 
   /** Customize data info */
   [prop: string]: any;