emacs: remove obsolete Reddit frontends

Reddit changed the terms of its APIs which essentially killed all
third-party clients. As a result Libreddit cannot be used anymore. [0]

This is very unfortunate since Libreddit was working quite well in EWW.
Now I'm using old.reddit.com which is still better than the regular
Reddit website but still pretty bad in comparison to Libreddit.

[0]: libreddit/libreddit#840

.config/emacs/lisp/init-eww.el

@@ -11,10 +11,8 @@
 (setq eww-search-prefix "https://www.google.com/search?q=")
 
 ;; use lightweight frontends which EWW can render better
-(setq mz/url-replace-host-map '(("reddit.com" . "libreddit.de")
-                                ("old.reddit.com" . "libreddit.de")
-                                ("www.reddit.com" . "libreddit.de")
-                                ("teddit.net" . "libreddit.de")))
+(setq mz/url-replace-host-map '(("reddit.com" . "old.reddit.com")
+                                ("www.reddit.com" . "old.reddit.com")))
 
 (defun mz/url-replace-host (url)
   "Replace host of URL according to `mz/url-replace-host-map'."