Do not add creator and date to generated help files. Those info do not add anything useful and make reproducible builds not possible

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 6a183830e0)

admin/gendoc.pl

@@ -149,7 +149,7 @@ sub print_header
 
 sub print_footer
 {
-	print $g_filehandle "<hr>KVIrc $g_version Documentation<br>Generated by $g_currentuser at $g_currenttime\n";
+	print $g_filehandle "<hr>KVIrc $g_version Documentation\n";
 	print $g_filehandle "</body>\n";
 	print $g_filehandle "</html>\n";
 }