remove unused injection

src/index.ts

@@ -9,11 +9,10 @@ import {
   BasePlugin,
   Caller,
   Provide,
-  Inject,
   LifecycleEvents,
 } from 'koishi-thirdeye';
-import { Connection, ConnectionOptions, createConnection } from 'typeorm';
-import { Context, Database } from 'koishi';
+import { Connection, ConnectionOptions } from 'typeorm';
+import { Context } from 'koishi';
 export * from './config';
 
 interface ConnectionEntry {
@@ -42,9 +41,6 @@ export default class TypeORMPlugin
   @Caller()
   private caller: Context;
 
-  @Inject()
-  private database: Database;
-
   async close(token: string) {
     const entry = this.registryMap.get(token)!;
     if (!entry) return;