removing deprecated swagger-tools example

Author: jkyberneees

README.md

@@ -292,7 +292,6 @@ Examples :
 * **raw-body**: [https://www.npmjs.com/package/raw-body](https://www.npmjs.com/package/raw-body). See demo: [raw-body.js](demos/raw-body.js)
 * **express-jwt**: [https://www.npmjs.com/package/express-jwt](https://www.npmjs.com/package/express-jwt). See demo: [express-jwt.js](demos/express-jwt.js)
 * **body-parser**: [https://www.npmjs.com/package/body-parser](https://www.npmjs.com/package/body-parser). See demo: [body-parser.js](demos/body-parser.js)
-* **swagger-tools**: [https://www.npmjs.com/package/swagger-tools](https://www.npmjs.com/package/swagger-tools). See demo: [swagger](demos/swagger/index.js)
 
 #### Async middlewares support
 Since version `v3.3.x`, you can also use async middlewares as described below: