Remove unused variable $dbh in pkgbase_display_details

Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

web/lib/pkgbasefuncs.inc.php

@@ -264,8 +264,6 @@ function pkgbase_get_details($base_id) {
  * @return void
  */
 function pkgbase_display_details($base_id, $row, $SID="") {
-	$dbh = DB::connect();
-
 	if (isset($row['error'])) {
 		print "<p>" . $row['error'] . "</p>\n";
 	}