Remove Tumblr

It doesn't like HSTS with included subdomains and enabling CloudFlare
would make CNAME check to domains.tumblr.com to fail.

sitemaps.xml: link to ciblia.tumblr.com sitemap directly.

pages/subdomains.markdown

@@ -9,7 +9,5 @@ excerpt: "Subdomains that can be a little more interesting than this site is :("
     * My bitbucket which is a little silent, I am more active with GitHub…
 * [Paste](https://paste.mikaela.info)
     * pastebin ([Stikked](https://github.com/claudehohl/Stikked))
-* [Tumblr](http://tumblr.mikaela.info)
-    * My Tumblr which is a little inactive…
 * [zero](https://zero.mikaela.info)
     * pastebin ([ZeroBin](https://github.com/sebsauvage/ZeroBin/)).

robots.txt

@@ -6,5 +6,4 @@ Disallow: /channel
 Disallow: /links2
 Disallow: /r/
 Sitemap: https://mikaela.info/sitemap.xml
-Sitemap: http://tumblr.mikaela.info/sitemap.xml
 Sitemap: https://mikaela.info/sitemaps.xml

sitemaps.xml

@@ -4,6 +4,6 @@
         <loc>https://mikaela.info/sitemap.xml</loc>
     </sitemap>
     <sitemap>
-        <loc>http://tumblr.mikaela.info/sitemap1.xml</loc>
+        <loc>http://ciblia.tumblr.com/sitemap1.xml</loc>
     </sitemap>
 </sitemapindex>