Error while uninstalling BAT

I want to uninstall BAT. I have already disabled all the modules from the administration page, now I'm uninstalling them.
When reaching the module "BAT Booking Example", it can't be disabled and the following message is given:
Fatal error: Call to undefined function bat_event_type_load() in C:\xampp\htdocs\site7\sites\all\modules\bat\modules\bat_booking\bat_booking_example\bat_booking_example.install on line 66

How to proceed?
Some other BAT modules can't be uninstalled untill the BAT Booking Example is there.