Fix \N mention in manual

doc/src/sgml/ref/copy.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/copy.sgml,v 1.12 1999/12/17 14:52:51 thomas Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/copy.sgml,v 1.13 2000/04/18 18:41:15 momjian Exp $
 Postgres documentation
 -->
 
@@ -315,9 +315,8 @@ ERROR: <replaceable>reason</replaceable>
     represented as a backslash and a newline.  When loading text data
     not generated by <acronym>Postgres</acronym>,
     you will need to convert backslash
-    characters ("\") to double-backslashes ("\\") to ensure that they are loaded
-    properly. (The sequence "\N" will always be interpreted as a backslash and
-    an "N", for compatibility. The more general solution is "\\N".)
+    characters ("\") to double-backslashes ("\\") to ensure that they 
+    are loaded properly.
    </para>
   </refsect2>