remove comment regarding G-1050 in G-9040

Author: PhilippSalvisberg

docs/4-language-usage/9-function-usage/g-9040.md

@@ -25,7 +25,7 @@ create or replace package body employee_api is
       update employees
          set date_of_birth = to_date(
                 co_dob_str default null on conversion error
-               ,'YYYY-MM-DD' -- violates also G-1050, must be a literal
+               ,'YYYY-MM-DD'
              )
        where employee_id = co_employee_id;
    end set_dob;