test: remove unit test for faq item

react-testing-library is not able to detect that the ancestor element
of the element containing the text has overflow=hidden applied.
Cypress is way smarter here.

https://github.com/testing-library/jest-dom/#tobevisible
https://docs.cypress.io/guides/core-concepts/interacting-with-elements.html#Additionally-an-element-is-considered-hidden-if