remove order

packages/slackbot-proxy/src/entities/order.ts

@@ -1,5 +1,5 @@
 import {
-  Column, CreateDateColumn, Entity, PrimaryGeneratedColumn, UpdateDateColumn, ManyToOne, OneToOne,
+  Column, CreateDateColumn, Entity, PrimaryGeneratedColumn, UpdateDateColumn, ManyToOne,
 } from 'typeorm';
 import { Installation } from './installation';