Revert "(bug 58943) Archivebot: create unit tests for Timestripper"

This change caused python setup.py test to hang. I'm not
sure why -- might be a deadlock. Reverting for now.

This reverts commit e4573ae98834b9834735fb0cdf2754c81f644ed5.

Change-Id: Icfa83148972503dc8e87a654ac035c4ec69fdf08
Merge "Revert "(bug 58943) Archivebot: create unit tests for Timestripper""