Index: openacs-4/packages/news-aggregator/tcl/source-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/news-aggregator/tcl/source-procs.tcl,v
diff -u -r1.20 -r1.21
--- openacs-4/packages/news-aggregator/tcl/source-procs.tcl	2 Apr 2019 10:08:43 -0000	1.20
+++ openacs-4/packages/news-aggregator/tcl/source-procs.tcl	2 Apr 2019 10:42:42 -0000	1.21
@@ -167,9 +167,6 @@
             set pub_date [clock format $pub_date -format "%Y-%m-%d %T UTC"]
         }
 
-        # Notice: we are assuming source_id,guid is a superkey of
-        # na_items. This is not technically true, but this upgrade
-        # strategy should enforce it.
         set item_exists_p [db_0or1row get_existing_news_item {
             select title as existing_title, description as existing_description, link as existing_link
             from na_items