docs: remove bad line

aio/content/tutorial/toh-pt4.md

@@ -101,8 +101,6 @@ The `@Injectable()` decorator accepts a metadata object for the service, the sam
 
 To do this, look for the `@Injectable()` statement right before the `HeroService` class definition, and add the `providedIn` metadata value.You typically provide a service at the root level, so that it can be used anywhere in the app:    
 
-<code-example path="toh-pt4/src/app/hero.service.1.ts" region="getHeroes">
-</code-example>
 <code-example path="toh-pt4/src/app/hero.service.2.ts" linenums="false" title="src/app/app.service.ts (provide service)" region="provider">
 </code-example>