idevicebackup2: use RemoveDirectory/DeleteFile instead of remove() on win32
idevicebackup2: use RemoveDirectory/DeleteFile instead of remove() on win32

kalev/libimobiledevice,libimobiledevice-win32/libimobiledevice,kalev/libimobiledevice,patweb/libimobiledevice,Tatsh/libimobiledevice,libimobiledevice-win32/libimobiledevice,kalev/libimobiledevice,patweb/libimobiledevice,upbit/libimobiledevice,patweb/libimobiledevice,libimobiledevice-win32/libimobiledevice,libimobiledevice/libimobiledevice,libimobiledevice-win32/libimobiledevice,Tatsh/libimobiledevice,Tatsh/libimobiledevice,upbit/libimobiledevice,upbit/libimobiledevice,libimobiledevice/libimobiledevice,Tatsh/libimobiledevice