Android LNK: reduced protected apps / services from Kill to release RAM.

Services are auto start again FRESH without leaking RAM.

so let LNK kill them in case there is no more free RAM!

Also removed minfree_screen_on setting as it's not needed.

On screen OFF, kernel copy lowmem_minfree to lowmem_minfree_screen_on
and then set the lowmem_minfree_screen_off to lowmem_minfree

so when screen will be ON lowmem_minfree_screen_on will push data
to lowmem_minfree table!