Drop all unneeded files

Signed-off-by: Simon Busch <morphis@gravedo.de>
Drop MemoryMonitor implementation

MemoryMonitor is part of luna-appmanager and should not stay here.

Signed-off-by: Simon Busch <morphis@gravedo.de>
Drop BackupManager which does nothing usefull for us

The BackupManager was doing backup for launcher settings which we
don't have in here anymore.

Signed-off-by: Simon Busch <morphis@gravedo.de>