fix(challenge): remove coveo challenge

Author: brunopulis

README.md

@@ -15,7 +15,6 @@ Would you like to check your skills for automation test, or practice writing tes
 | [Claro](https://www.claro.com.br/)                    | Scenario, Web, Mobile, Automation, Gherkin, Cucumber, Appium, BrowserStack | [Code →](https://github.com/mobile-clarobrasil/claro-brasil-challenge-qa)     |
 | [Codacy](https://www.codacy.com/)                     | Web, Automation, Javascript                                                | [Code →](https://github.com/codacy/qa-frontend-challenge)                     |
 | [Concrete](https://www.concrete.com.br/)              | Scenario, Api, Mobile, Automation, Gherkin, Gauge                          | [Code →](https://github.com/concretesolutions/qa-recruiting-brazil)           |
-| [Coveo](https://www.coveo.com/)                       | Web, Automation                                                            | [Code →](https://github.com/coveo/QA-challenge)                               |
 | [Editora-globo](https://medium.com/editora-globo)     | Scenario, Api, Mobile, Automation, Selenium, Gherkin, Java                 | [Code →](https://github.com/Infoglobo/desafio-qa)                             |                  |
 | [Fleury](https://www.fleury.com.br/)                  | Scenario, Mobile, Automation, Ruby, Appium, Cucumber                       | [Code →](https://github.com/grupofleury/qa_automation_mobile)                 |
 | [Holmusk](https://www.holmusk.com/)                   | Mobile, Automation                                                         | [Code →](https://github.com/Holmusk/QA-Automation-Challenge)                  |