flo: Drop ppd service entry from init.flo.rc.

The ppd service which runs the mm-pp-daemon binary appears
to no longer be used. The last occurrence of the binary is
with the jls36i build. In fact, current builds report that
the ppd service is explicitly being disabled.
<3>[    5.023345] init: cannot find '/system/bin/mm-pp-daemon', disabling 'ppd'

Change-Id: I5902b6876d5bea33bb65dcaa505fc4ee13a61677
Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>