fix: remove bad defaults from selling settings

"All cusotmer groups" and "All territories" are pointless defaults, not
sure why these are made default. They don't help you track anything.
"All" might as well be `Null`.

Even the filters for customer_group suggest it shouldn't be group then
having the root as default makes no sense.

(cherry picked from commit 105b6d498c)

erpnext/selling/doctype/selling_settings/selling_settings.py

@@ -8,7 +8,6 @@ import frappe
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
 from frappe.model.document import Document
 from frappe.utils import cint
-from frappe.utils.nestedset import get_root_of
 
 
 class SellingSettings(Document):
@@ -37,9 +36,3 @@ class SellingSettings(Document):
 		editable_bundle_item_rates = cint(self.editable_bundle_item_rates)
 
 		make_property_setter("Packed Item", "rate", "read_only", not(editable_bundle_item_rates), "Check", validate_fields_for_doctype=False)
-
-	def set_default_customer_group_and_territory(self):
-		if not self.customer_group:
-			self.customer_group = get_root_of('Customer Group')
-		if not self.territory:
-			self.territory = get_root_of('Territory')

erpnext/setup/setup_wizard/operations/install_fixtures.py

@@ -304,7 +304,6 @@ def set_more_defaults():
 
 def update_selling_defaults():
 	selling_settings = frappe.get_doc("Selling Settings")
-	selling_settings.set_default_customer_group_and_territory()
 	selling_settings.cust_master_name = "Customer Name"
 	selling_settings.so_required = "No"
 	selling_settings.dn_required = "No"