update opensearch conf - remove suche.sueddeutsche.de

apparently they've revoked the participation in opensearch initiative.

defaults/heuristicopensearch.conf

@@ -16,7 +16,6 @@
 
 #Faroo-News = http://www.faroo.com/api?q={searchTerms}&start={startIndex}&length=20&l=en&src=news&f=rss  # get results from Faroo news-search
 #WordPress.com = http://en.search.wordpress.com/?q={searchTerms}&f=feed&page={startPage?}  #Search WordPress.com Blogs
-#Sueddeutsche.de = http://suche.sueddeutsche.de/query/{searchTerms}?output=rss # Sueddeutsche Zeitung Artikel Archiv
 #Los Angeles Times = http://framework.latimes.com/?s={searchTerms}&feed=rss2
 #Archive-It = http://archive-it.org/seam/resource/opensearch?q={searchTerms}&n=20 # archiving cultural heritage on the web
 #npmjs = https://www.npmjs.com/search?q={searchTerms} # Search JavaScript packages from the npm repository