panel: sendmail edit: don't translate 'Proxmox VE' in author field

The default value is determined by the backend and is never
translated (which does not make sense any way for a product name).
This was likely just a copy/paste mistake from other from fields.

Signed-off-by: Lukas Wagner <l.wagner@proxmox.com>

src/panel/SendmailEditPanel.js

@@ -111,7 +111,7 @@ Ext.define('Proxmox.panel.SendmailEditPanel', {
 	    fieldLabel: gettext('Author'),
 	    name: 'author',
 	    allowBlank: true,
-	    emptyText: gettext('Proxmox VE'),
+	    emptyText: 'Proxmox VE',
 	    cbind: {
 		deleteEmpty: '{!isCreate}',
 	    },