collection browsing: remove pagination support

rationale: we do not expect hundreds of collection (and it was likely broken
anyhow)

thanks to Elrond der Elbenfuerst for pointing this out

mediagoblin/user_pages/views.py

@@ -338,20 +338,16 @@ def user_collection(request, page, url_user=None):
 
 
 @active_user_from_url
-@uses_pagination
-def user_collections(request, page, url_user=None):
+def user_collections(request, url_user=None):
     """A User-defined Collection"""
     collections = Collection.query.filter_by(
         get_creator=url_user)
 
-    pagination = Pagination(page, collections)
-
     return render_to_response(
         request,
         'mediagoblin/user_pages/collections.html',
         {'user': url_user,
-         'collections': collections,
-         'pagination': pagination})
+         'collections': collections})
 
 
 @get_user_collection_item