qutebrowser: Remove blocked hosts from repo

Blocked hosts reside in a single (giant) plaintext file, which we
now remove from the repository.

Especially with the new blocking sources we grew from around 700k
(which was already a lot at ~35000 lines) to around 5MB which is
just stupid to keep in the git repo if we don't have to.
Since qutebrowser automatically re-creates the file for us on
running `:adblock-update` there's no reason to waste space here.

.gitignore

@@ -27,6 +27,8 @@ sponsorblock.txt
 /qutebrowser/.config/qutebrowser/stylesheets
 # ignore the generated readability file for webpages
 readability.html
+# ignore the adblock file generated by qutebrowser
+blocked-hosts
 
 # ignore vifm & ueberzug utility files
 vifm-help.txt

qutebrowser/.config/qutebrowser/content.py

@@ -1,15 +1,12 @@
 c.content.blocking.enabled = True
 c.content.blocking.method = "both"
 c.content.blocking.adblock.lists = [
-    "https://www.malwaredomainlist.com/hostslist/hosts.txt",
+    "https://easylist.to/easylist/easylist.txt",
+    "https://easylist.to/easylist/easyprivacy.txt",
     "https://someonewhocares.org/hosts/hosts",
     "https://pgl.yoyo.org/adservers/serverlist.php?hostformat=hosts&mimetype=plaintext",
     "https://secure.fanboy.co.nz/fanboy-cookiemonster.txt",
 ]
-c.content.blocking.hosts.lists = [
-    "https://winhelp2002.mvps.org/hosts.zip",
-    "https://malwaredomains.lehigh.edu/files/justdomains.zip",
-]
 c.content.blocking.whitelist = ["piwik.org"]
 c.content.autoplay = False
 c.content.prefers_reduced_motion = True