Remove Onion Browser, leaks via WebRTC (#509)

https://github.com/OnionBrowser/OnionBrowser/issues/117

_data/software/browsers-mobile/2_onion_browser.yml

@@ -1,15 +0,0 @@
-title: Onion Browser
-type: Recommendation
-logo: /assets/img/browsers/onion_browser.svg
-description: |
-  <strong>Onion Browser</strong> is an open-source browser that lets you browse the web anonymously over the Tor network on iOS devices and is endorsed by the <a href="https://support.torproject.org/glossary/onion-browser/">Tor Project</a>.
-
-  <h4>Notes</h4>
-  There are some anonymity-related <a href="https://onionbrowser.com/about">issues</a> with Onion Browser due to iOS limitations.
-website: 'https://onionbrowser.com/'
-privacy_policy: 'https://onionbrowser.com/privacy-policy'
-downloads:
-  - icon: fab fa-app-store-ios
-    url: 'https://apps.apple.com/app/id519296448'
-  - icon: fab fa-github
-    url: 'https://github.com/OnionBrowser/OnionBrowser'

assets/img/browsers/onion_browser.svg

@@ -1,2 +0,0 @@
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