Revert "Fix pagination to use bigger size and not need more calls"

This reverts commit a2c8ff0cb8b2acc782d99516c88f345309659142.
Conflicts: y2m

A nice idea but the fix was not tested, obviously. The per_page limit is 100 according to github's api documentation. The following command always returns "100" even though we have more than 140 modules:
# curl -s "https://api.github.com/orgs/yast/repos?per_page=10000" | grep git_url | wc -l