[PATCH 1/1] Remove redundant data for niu_NZ

[AKHILESH KUMAR]

> > -week 7;19971130;1
>> +copy "niu_NU"
> >  END LC_TIME
> 
> niu_NU contains:
>
week 7;19971130;1
> first_weekday 2
>
> Is “first_weekday 2” appropriate for NZ?
  
  yes  
  https://www.timeanddate.com/calendar/?country=30
  
> Is it even right for NU? Isn’t this a contradiction to
>“week 7;19971130;1”?

  Looks "week" needs to change 
  http://www.niueisland.com/calendar/?view=calendar&month=August-2017
  
> https://sourceware.org/glibc/wiki/Locales#LC_TIME says:
>
> > week DAYSINWEEK;WEEKSTARTDATE;MINWEEKLEN - DAYSINWEEK is usually 7;
> > MINWEEKLEN is the minimal length of the first week in year (usually
> > 4). WEEKSTARTDATE is most confusing - it should be some date that
>> corresponds to the beginning of a week. It is typically either 19971130
> (Sunday) or 19971201 (Monday), the former being used almost by all glibc
> locales (see below).
> 
> first_weekday N - number of day in the week to be shown in the first
> column of a calendar. Defaults to 1.