base: remove extra checks

p and p.applicationInfo are always != null (they are checked previously), so below checks
are unnecessaries

Change-Id: I155506512fe8b307f12408bbf3066c07a3504506
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Tunning max allowed background services

The serialize running of background services feature
delay some services startup when system bootup, and
lead some abnormal behaivor at the early of system startup.
Tunning will be disabled after system complete bootup.

Change-Id: I834607d9156253bee13848586a8136e24760fdf4