Update content/exception-filters.md

Author: kamilmysliwiec

content/exception-filters.md

@@ -183,55 +183,6 @@ export class HttpExceptionFilter {
 > info **Hint** All exception filters should implement the generic `ExceptionFilter<T>` interface. This requires you to provide the `catch(exception: T, host: ArgumentsHost)` method with its indicated signature. `T` indicates the type of the exception.
 
 > warning **Warning** If you are using `@nestjs/platform-fastify` you can use `response.send()` instead of `response.json()`. Don't forget to import the correct types from `fastify`.
-
-like this:
-
-```typescript
-@@filename(http-exception.filter)
-import { ExceptionFilter, Catch, ArgumentsHost, HttpException } from '@nestjs/common';
-import { FastifyReply as Response, FastifyRequest as Request } from 'fastify';
-
-@Catch(HttpException)
-export class HttpExceptionFilter implements ExceptionFilter {
-  catch(exception: HttpException, host: ArgumentsHost) {
-    const ctx = host.switchToHttp();
-    const response = ctx.getResponse<Response>();
-    const request = ctx.getRequest<Request>();
-    const status = exception.getStatus();
-
-    response
-      .status(status)
-      .send({
-        statusCode: status,
-        timestamp: new Date().toISOString(),
-        path: request.url,
-      });
-  }
-}
-@@switch
-import { Catch, HttpException } from '@nestjs/common';
-
-@Catch(HttpException)
-export class HttpExceptionFilter {
-  catch(exception, host) {
-    const ctx = host.switchToHttp();
-    const response = ctx.getResponse();
-    const request = ctx.getRequest();
-    const status = exception.getStatus();
-
-    response
-      .status(status)
-      .send({
-        statusCode: status,
-        timestamp: new Date().toISOString(),
-        path: request.url,
-      });
-  }
-}
-```
-
-> info **Hint** you must install `fastify`
-
 The `@Catch(HttpException)` decorator binds the required metadata to the exception filter, telling Nest that this particular filter is looking for exceptions of type `HttpException` and nothing else. The `@Catch()` decorator may take a single parameter, or a comma-separated list. This lets you set up the filter for several types of exceptions at once.
 
 #### Arguments host