Revert "✨ feat(db): 给item表增加只读节点"

This reverts commit 682e2cad54f2daad9a27ebe3b9ed70ae6ccbaf3c.

shared/db/Item.ts

@@ -1,5 +1,5 @@
 import BaseModel from './BaseModel';
-import { index, getModelForClass, prop, DocumentType, modelOptions, ReturnModelType, mongoose } from '@typegoose/typegoose';
+import { index, getModelForClass, prop, DocumentType, modelOptions } from '@typegoose/typegoose';
 import { BAG } from '../pubUtils/dicParam';
 import { SearchItemParam } from '../domain/backEndField/search';
 // const Transaction = require("mongoose-transactions");
@@ -141,13 +141,6 @@ export default class Item extends BaseModel {
 
 export const ItemModel = getModelForClass(Item);
 
-export let ItemROModel: ReturnModelType<typeof Item, {}>;
-export function loadItemROModel(connect: mongoose.Connection) {
-    ItemROModel = getModelForClass(Item, {
-        existingConnection: connect
-    });
-}
-
 export interface ItemType extends Pick<DocumentType<Item>, keyof Item> {
     id: number;
 };