refactor: remove unused customer field in Item DocType (backport #55277) (#55283)

Co-authored-by: Mihir Kandoi <kandoimihir@gmail.com>

erpnext/stock/doctype/item/item.js

@@ -286,7 +286,6 @@ frappe.ui.form.on("Item", {
 			frm.set_df_property(fieldname, "read_only", stock_exists);
 		});
 		frm.set_df_property("is_fixed_asset", "read_only", frm.doc.__onload?.asset_exists ? 1 : 0);
-		frm.toggle_reqd("customer", frm.doc.is_customer_provided_item ? 1 : 0);
 	},
 
 	validate: function (frm) {
@@ -297,10 +296,6 @@ frappe.ui.form.on("Item", {
 		refresh_field("image_view");
 	},
 
-	is_customer_provided_item: function (frm) {
-		frm.toggle_reqd("customer", frm.doc.is_customer_provided_item ? 1 : 0);
-	},
-
 	is_fixed_asset: function (frm) {
 		// set serial no to false & toggles its visibility
 		frm.set_value("has_serial_no", 0);

erpnext/stock/doctype/item/item.json

@@ -31,7 +31,6 @@
   "column_break_kpmi",
   "is_purchase_item",
   "is_customer_provided_item",
-  "customer",
   "section_break_gjns",
   "standard_rate",
   "column_break_ixrh",
@@ -632,13 +631,6 @@
    "read_only_depends_on": "eval: doc.is_purchase_item",
    "show_description_on_click": 1
   },
-  {
-   "depends_on": "eval:doc.is_customer_provided_item",
-   "fieldname": "customer",
-   "fieldtype": "Link",
-   "label": "Customer",
-   "options": "Customer"
-  },
   {
    "depends_on": "eval:!doc.is_fixed_asset",
    "fieldname": "supplier_details",
@@ -1077,7 +1069,7 @@
  "image_field": "image",
  "links": [],
  "make_attachments_public": 1,
- "modified": "2026-04-28 17:31:47.613279",
+ "modified": "2026-05-26 10:18:46.862670",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Item",

erpnext/stock/doctype/item/item.py

@@ -82,7 +82,6 @@ class Item(Document):
 		brand: DF.Link | None
 		country_of_origin: DF.Link | None
 		create_new_batch: DF.Check
-		customer: DF.Link | None
 		customer_code: DF.SmallText | None
 		customer_items: DF.Table[ItemCustomerDetail]
 		customs_tariff_number: DF.Link | None