remove usages of some backend-common helpers

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/app-backend/src/service/appPlugin.test.ts

@@ -20,7 +20,6 @@ import {
   startTestBackend,
 } from '@backstage/backend-test-utils';
 import { appPlugin } from './appPlugin';
-import { createRootLogger } from '@backstage/backend-common';
 import { overridePackagePathResolution } from '@backstage/backend-plugin-api/testUtils';
 
 const mockDir = createMockDirectory();
@@ -29,9 +28,6 @@ overridePackagePathResolution({
   path: mockDir.path,
 });
 
-// Make sure root logger is initialized ahead of FS mock
-createRootLogger();
-
 describe('appPlugin', () => {
   afterEach(() => {
     mockDir.clear();

plugins/app-backend/src/service/router.ts

@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-import { notFoundHandler } from '@backstage/backend-common';
 import {
   DatabaseService,
   resolvePackagePath,
@@ -22,7 +21,7 @@ import {
 } from '@backstage/backend-plugin-api';
 import { AppConfig } from '@backstage/config';
 import helmet from 'helmet';
-import express from 'express';
+import express, { Request, Response } from 'express';
 import Router from 'express-promise-router';
 import fs from 'fs-extra';
 import { resolve as resolvePath } from 'path';
@@ -299,7 +298,9 @@ async function createEntryPointRouter({
   if (staticFallbackHandler) {
     staticRouter.use(staticFallbackHandler);
   }
-  staticRouter.use(notFoundHandler());
+  staticRouter.use((_req: Request, res: Response) => {
+    res.status(404).end();
+  });
 
   router.use('/static', staticRouter);