Issue mozilla-mobile#10389: Remove codecov.

Author: pocmo

README.md

@@ -1,7 +1,6 @@
 # Android components
 
 [![Task Status](https://firefox-ci-tc.services.mozilla.com/api/github/v1/repository/mozilla-mobile/android-components/master/badge.svg)](https://firefox-ci-tc.services.mozilla.com/api/github/v1/repository/mozilla-mobile/android-components/master/latest)
-[![codecov](https://codecov.io/gh/mozilla-mobile/android-components/branch/master/graph/badge.svg)](https://codecov.io/gh/mozilla-mobile/android-components)
 [![Mergify Status](https://img.shields.io/endpoint.svg?url=https://gh.mergify.io/badges/mozilla-mobile/android-components&style=flat)](https://mergify.io)
 [![chat.mozilla.org](https://img.shields.io/badge/chat-on%20matrix-51bb9c)](https://chat.mozilla.org/#/room/#android-components:mozilla.org)