Remove duplicate (and now incorrect) documentation for row-wise IS [NOT]

NULL.  Noted by Teodor.

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 978309d59eaa56cc466cb33aa2efaaa68439b792..6cb3be3b740ec3b6abeb9ccf59d10ea5987d4ff8 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1,4 +1,4 @@
-
+
 
  
   Functions and Operators
@@ -8829,14 +8829,6 @@ SELECT col1 FROM tab1
    IS NOT DISTINCT FROM
   
 
-  
-   IS NULL
-  
-
-  
-   IS NOT NULL
-  
-
   
    This section describes several specialized constructs for making
    multiple comparisons between groups of values.  These forms are
@@ -9072,16 +9064,6 @@ AND
    be either true or false, never null.
   
 
-
-row_constructor IS NULL
-row_constructor IS NOT NULL
-
-
-  
-   These constructs test a row value for null or not null.  A row value
-   is considered not null if it has at least one field that is not null.
-  
-