Fix phpcs sniff error

The module contains a phpcs.xml.dist from here: https://git.drupalcode.org/project/examples/blob/HEAD/phpcs.xml.dist.

As such, the current version of the file is very similar to the one in the above link (except the sniff referred to in the error message). While we can update the file, I think it is more productive to just remove the file and let Gitlab CI pull in the default one. We can bring this one back if we need to customize anything.

Automatically closed - issue fixed for 2 weeks with no activity.