TST: gnufreebsd has fixed the thread control word loss

http://lists.alioth.debian.org/pipermail/glibc-bsd-commits/2014-September/004163.html
Merge pull request #5070 from juliantaylor/gnubsd-fix

TST: gnufreebsd has fixed the thread control word loss
MAINT: Remove testcalcs.py file.

The testcalcs.py file is nowhere imported or installed, nor did anyone
reply when it was proposed on the mailing list to remove it. It looks
to be a leftover from the original work on datetime.
Merge pull request #5072 from charris/remove-testcalcs.py

MAINT: Remove testcalcs.py file.