remove deprecated bootloader agent
remove obsolete upgrade clients
remove complete device update stuff as for new upgrade we do repropose if non-grub2 used and keep it to grub2 if it is used
fix build
remove obsolete print-product, perl-bootloader already use different methods
remove unused methods from Bootloader API
cleanup public interfacce of BootStorage
clean up BootSupportCheck module
remove unused method
Merge pull request #66 from yast/grub2_cleaning

Grub2 cleaning