Remove now redundant APKs links.
- Wire is in F-Droid main repo
- Kiwix is in F-Droid main repo
- Firefox Klar and Focus have been merged into Firefox Android, see https://github.com/mozilla-mobile/focus-android
- Larix tools are set as static versions because they have updated the APKs on Google Play to a subscription model... This repo is effectively now for Firefox for Android and Signal...