Doc: remove duplicate index entry.

This causes a warning with the old html-docs toolchain, though not with the
new.  I had originally supposed that we needed both  entries to
get both a primary index entry and a see-also link; but evidently not,
as pointed out by Fabien Coelho.

Discussion: https://postgr.es/m/alpine.DEB.2.20.1702161616060.5445@lancre

diff --git a/doc/src/sgml/syntax.sgml b/doc/src/sgml/syntax.sgml
index 97bead90f89c9300f7f3c48b5ba4f6ab355de5c2..40c46c60c7f05a1a1af85f481dfe0a5b8bf6bdc1 100644 (file)
--- a/doc/src/sgml/syntax.sgml
+++ b/doc/src/sgml/syntax.sgml
@@ -1697,9 +1697,6 @@ SELECT string_agg(a ORDER BY a, ',') FROM table;  -- incorrect
    
 
    
-    
-     median
-    
     
      median
      percentile