fix: remove validate_name_in_customer function
diff --git a/erpnext/setup/doctype/customer_group/customer_group.py b/erpnext/setup/doctype/customer_group/customer_group.py
index 0b783c0..7b725c3 100644
--- a/erpnext/setup/doctype/customer_group/customer_group.py
+++ b/erpnext/setup/doctype/customer_group/customer_group.py
@@ -40,14 +40,9 @@
 			self.parent_customer_group = get_root_of("Customer Group")
 
 	def on_update(self):
-		self.validate_name_with_customer()
 		super().on_update()
 		self.validate_one_root()
 
-	def validate_name_with_customer(self):
-		if frappe.db.exists("Customer", self.name):
-			frappe.msgprint(_("A customer with the same name already exists"), raise_exception=1)
-
 
 def get_parent_customer_groups(customer_group):
 	lft, rgt = frappe.db.get_value("Customer Group", customer_group, ["lft", "rgt"])