fix: Set remarks blank instead of No remarks in Sales/Purchase Invoices

(cherry picked from commit 2515bf3)

Author: khushi8112

erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py

@@ -332,9 +332,6 @@ def create_remarks(self):
 				if self.bill_date:
 					self.remarks += " " + _("dated {0}").format(formatdate(self.bill_date))
 
-			else:
-				self.remarks = _("No Remarks")
-
 	def set_missing_values(self, for_validate=False):
 		if not self.credit_to:
 			self.credit_to = get_party_account("Supplier", self.supplier, self.company)

erpnext/accounts/doctype/sales_invoice/sales_invoice.py

@@ -1101,9 +1101,6 @@ def add_remarks(self):
 				if self.po_date:
 					self.remarks += " " + _("dated {0}").format(formatdate(self.po_date))
 
-			else:
-				self.remarks = _("No Remarks")
-
 	def validate_auto_set_posting_time(self):
 		# Don't auto set the posting date and time if invoice is amended
 		if self.is_new() and self.amended_from: