Remove some unecessary debug

Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>
Re-factoring mass-storage code

Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>
Do not clean up twice, improve debug output

Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>