Remove the tiuxo social extension.

extensions/social/tiuxo/hosts

@@ -1,4 +0,0 @@
-0.0.0.0 mbga.jp
-0.0.0.0 mixi.jp
-0.0.0.0 mixch.tv
-0.0.0.0 lobi.co

extensions/social/tiuxo/readme.md

@@ -1,7 +0,0 @@
-# Source domain history
-
-This page is only occasionally refreshed.
-
-![History of the number of domains from this source](./stats.png)
-
-The file `stats.out` in this folder contains raw data for this graph.

extensions/social/tiuxo/stats.out

@@ -1,3 +0,0 @@
-2019-04-25,4
-2019-05-10,6
-2019-05-23,4

extensions/social/tiuxo/update.json

@@ -1,9 +0,0 @@
-{
-  "name": "Tiuxo hostlist - social",
-  "description": "Categorized hosts files for DNS based content blocking",
-  "homeurl": "https://github.com/tiuxo/hosts",
-  "frequency": "occasional",
-  "issues": "https://github.com/tiuxo/hosts/issues",
-  "url": "https://raw.githubusercontent.com/tiuxo/hosts/master/social",
-  "license": "CC BY 4.0"
-}