galaxysbmtd: update recovery_keys

See http://review.cyanogenmod.org/62724

Also removed unused recovery_ui.c

Change-Id: If1e7eeb11874a576011862d050506d28629e1660
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_samsung_galaxysbmtd into cd-4.4