Removed libredns (no DNSSEC support) (#388)

Signed-off-by: Daniel Gray <dng@disroot.org>

_data/dns/libredns.yml

@@ -1,25 +0,0 @@
-title: LibreDNS
-homepage: 'https://libredns.gr/'
-source: 'https://gitlab.com/libreops/libredns'
-anycast: false
-locations:
-  - DE
-privacy_policy:
-  link: 'https://libreops.cc/terms.html'
-type:
-  name: Informal Collective
-  link: 'https://libreho.st/'
-  tooltip: >-
-    Part of LibreHosters,
-    "a network of cooperation and solidarity that uses free software to encourage decentralisation through federation and distributed platforms."
-logs:
-  policy: false
-protocols:
-  - name: DoH
-  - name: DoT
-dnssec: false
-qname_minimization: true
-filtering: Based on server choice (DoH servers only)
-providers:
-  - name: Hetzner Online GmbH
-    link: 'https://www.hetzner.com/'