Ext-CSS rules with 'remove' don't work in apps at hotcleaner.com

Similar issue as here - https://github.com/AdguardTeam/ExtendedCss/issues/127

Steps to reproduce:
1. Use AdGuard app
2. Add this rule to user rules:
```
hotcleaner.com#$?#body { remove: true; }
```
3. Go here - [https://www.hotcleaner.com/](https://adguardteam.github.io/AnonymousRedirect/redirect.html?url=https%3A%2F%2Fwww.hotcleaner.com%2F)

Website should be blank, but extended CSS rules with `remove` do not work.
I guess that it happens, because website override `Element.prototype.remove` and `Element.prototype.removeChild` function.