Revert "USB: f_mass_storage: Added cdrom option to UMS-lun-devices"

This reverts commit cae3af1745e5b1553a740c54628e2d932d23d29e.
Revert "USB: f_mass_storage: 2048 block size for cdrom devices"

This reverts commit a44c8236c0fdbf9beb833f035cbb218a90685583.
dualboot: samsung part1

Change-Id: Icae215e0bc9c7db22fef57502c90d1c439209269