fix: fix benchmark

benchmark/fixtures/midway-request-scope/src/app/controller/home.ts

@@ -1,11 +1,11 @@
-import { controller, get, provide, Controller } from 'midway';
+import { controller, get, provide } from 'midway';
 
 @provide()
 @controller('/')
-export class HomeController extends Controller {
+export class HomeController {
 
   @get('/')
-  async index() {
-    this.ctx.body = `Welcome to midwayjs!`;
+  async index(ctx) {
+    ctx.body = `Welcome to midwayjs!`;
   }
 }

benchmark/fixtures/midway-request-scope/src/app/controller/user.ts

@@ -1,16 +1,16 @@
-import { controller, Controller, get, inject, provide } from 'midway';
+import { controller, get, inject, provide } from 'midway';
 import { IUserResult, IUserService } from '../../interface';
 
 @provide()
 @controller('/user')
-export class UserController extends Controller {
+export class UserController {
   @inject('userService')
   service: IUserService;
 
   @get('/:id')
-  async getUser(): Promise<void> {
-    const id: number = this.ctx.params.id;
+  async getUser(ctx): Promise<void> {
+    const id: number = ctx.params.id;
     const user: IUserResult = await this.service.getUser({id});
-    this.ctx.body = {success: true, message: 'OK', data: user};
+    ctx.body = {success: true, message: 'OK', data: user};
   }
 }