CON-561 | HubsV2 removal

Please don't merge without https://github.com/Wikia/config/pull/448
Don't merge before Marketing team move all old hubs int new ones.

@SebastianMarzjan Can DataTeam code review changes connected to API?
We can't. We're using original $dir in line: https://github.com/Wikia/app/pull/3608/files#diff-7e9e4f284174b8d247105111229ca967R33