Revert "archivebot.py: Reset counter when timestamp fragment changes"
Revert "archivebot.py: Reset counter when timestamp fragment changes"

Due to T217107 and T218607

This reverts commit c97cf0aa1beedc78e429ecab7bbb954a8aa6bfc5.

Change-Id: Iec1e544b90d55c6deadd4dc419532c90c45fc077

wikimedia/pywikibot-core,PersianWikipedia/pywikibot-core,wikimedia/pywikibot-core