diff --git a/PVE/Storage/ISCSIPlugin.pm b/PVE/Storage/ISCSIPlugin.pm
index c361a20..f3a402c 100644
--- a/PVE/Storage/ISCSIPlugin.pm
+++ b/PVE/Storage/ISCSIPlugin.pm
@@ -378,10 +378,5 @@ sub check_connection {
     return iscsi_test_portal($portal);
 }
 
-sub volume_size_info {
-    my ($class, $scfg, $storeid, $volname, $timeout) = @_;
-
-    return undef;
-}
 
 1;