Remove ModSec rules that triggered after migration (sysadmin#17870)

All these rules were triggered, most possibly as false positives, after
Weblate migration to containerized setup. I have not reviewed each one
individually because (1) there are too many and our capacity is low and
(2) they are preventing the website from functioning correctly. My
current conclusion is that it's better to remove them for now and have
the website working.