Remove foreground app from output result

Remove foreground app from output result

- Issue:
MMI IU does not know forground app information.

- Solution:
Actually foreground app information is not used anywhere. Current voice
touch app UX does not need foreground app information. And also, screen
analyzer modality does not send foreground app information to mmi
manager. Thus, this patch removes unused information from output result.
Through this patch, IU does not need to manage app information.

Change-Id: I7fee0723b2ad3ce472199f869a4cc4d8aced34e8
Signed-off-by: Suyeon Hwang <stom.hwang@samsung.com>