Remove reference to getfilter(3)

doc/man/man3/ldap_search.3

@@ -86,9 +86,7 @@ attribute.  The filter "mail=*@terminator.rs.itd.umich.edu" will find
 any entries that have a mail attribute ending in the specified string.
 To put parentheses in a filter, escape them with a backslash '\\'
 character.  See RFC 2254 for a more complete description of allowable
-filters.  See
-.BR ldap_getfilter (3)
-for routines to help in constructing search filters automatically.
+filters. 
 .LP
 \fIAttrs\fP is a null-terminated array of attribute types to return
 from entries that match \fIfilter\fP.