revert: "fix: duplicate stock entry (#25486)"

Not required anymore, submit button is disabled.
diff --git a/erpnext/stock/dashboard/item_dashboard.js b/erpnext/stock/dashboard/item_dashboard.js
index dfb9e44..a657ecf 100644
--- a/erpnext/stock/dashboard/item_dashboard.js
+++ b/erpnext/stock/dashboard/item_dashboard.js
@@ -230,7 +230,6 @@
 		},
 		],
 	});
-	var submitted = false;
 	dialog.show();
 	dialog.get_field('item_code').set_input(item);
 
@@ -254,7 +253,6 @@
 	}
 
 	dialog.set_primary_action(__('Submit'), function () {
-		if(submitted) return;
 		var values = dialog.get_values();
 		if (!values) {
 			return;
@@ -267,7 +265,6 @@
 			frappe.msgprint(__('Source and target warehouse must be different'));
 		}
 
-		submitted = true;
 		frappe.call({
 			method: 'erpnext.stock.doctype.stock_entry.stock_entry_utils.make_stock_entry',
 			args: values,