Remove unused comment

Author: andylwelch

docs/tutorials/ssl.md

@@ -50,8 +50,6 @@ await mongoose.connect('mongodb://127.0.0.1:27017/test', {
   tls: true,
   // For example, see https://medium.com/@rajanmaharjan/secure-your-mongodb-connections-ssl-tls-92e2addb3c89
   // for where the `rootCA.pem` file comes from.
-  // Please note that, in Mongoose >= 5.8.3, `sslCA` needs to be
-  // the **path to** the CA file, **not** the contents of the CA file
   tlsCAFile: `${__dirname}/rootCA.pem`,
 });
 ```