fix (codegen): don't duplicate the primary-key getter for 'without rowid' tables

cmd/subcmd_generate_models.go

@@ -87,6 +87,10 @@ var generate_model = &cobra.Command{
 					// Skip expression indexes; there's no way to resolve an expression to a real column
 					continue
 				}
+				if index.Origin == "pk" && table.IsWithoutRowid {
+					// Already generated above, as the primary-key getter
+					continue
+				}
 				cols := make([]schema.Column, len(index.Columns))
 				for i, colName := range index.Columns {
 					cols[i] = table.GetColumnByName(colName)