[tz] Chile TZ rule 1942 June superfluous? PS

[Michael Deckers]

   On 2015-03-29 18:46, Paul Eggert wrote about the rules for Chile:

> Yes, that's right.  The line mentioning "Jul 15" can be removed without changing
> the meaning of the data.  I don't know why that line is there, but I suppose we
> can remove it.

   Same for the line
        Rule  Chile  1947 only  -  Apr 1  4:00u  0     -
   which does the same as its precursor
        Rule  Chile  1946 only  -  Sep 1  3:00u  0:00  -
   and which is superfluous as there is (currently) no usage
   of the Chile rules starting after 1946-09-01T03 and before
   or on 1947-04-01T04.

   Michael Deckers.