Remove Furaffinity. Usernames that don't exist are detected.

data.json

@@ -473,15 +473,6 @@
     "username_claimed": "dens",
     "username_unclaimed": "noonewouldeverusethis7"
   },
-  "Furaffinity": {
-    "errorMsg": "Fatal system error",
-    "errorType": "message",
-    "rank": 4278,
-    "url": "https://www.furaffinity.net/user/{}",
-    "urlMain": "https://www.furaffinity.net",
-    "username_claimed": "blue",
-    "username_unclaimed": "noonewouldeverusethis7"
-  },
   "Giphy": {
     "errorType": "status_code",
     "rank": 405,

removed_sites.md

@@ -6,6 +6,22 @@ They are listed here in the hope that things may change in the future
 so they may be re-included.
 
 
+## Furaffinity
+
+Usernames that don't exist are detected.
+
+```
+  "Furaffinity": {
+    "errorMsg": "Fatal system error",
+    "errorType": "message",
+    "rank": 4278,
+    "url": "https://www.furaffinity.net/user/{}",
+    "urlMain": "https://www.furaffinity.net",
+    "username_claimed": "blue",
+    "username_unclaimed": "noonewouldeverusethis7"
+  },
+```
+
 ## Duolingo
 
 Usernames that don't exist are detected.