Revert "[Test] ISO-8859 push & pull"

This reverts commit 58959938f715d6659f3c919a4610ac1dc0b2e1a1.
Change Kre extract file age test

ott_daily_tripdata extract script tried to test filename YYYYMMDD
>YYYYMM floor, and as such tried to process older records.

Change parsing of filename to correspond to monthly, to align logic with
shift data. This might not be ideal, so perhaps we will change to
YYYYMMDD testing instead.