Update yaml

Author: dainmiller

_data/locales/en.yml

@@ -40,7 +40,7 @@ copyright:
     All content on this blog is owned by Dain Miller unless otherwise noted.
     Please contact for reuse permissions.
 
-meta: Powered by :PLATFORM using the :THEME theme.
+meta: 
 
 not_found:
   statement: Sorry, we've misplaced that URL or it's pointing to something that doesn't exist.