nicki: remove unneeded mdm script

 - added class_main script for future use with nicki ds
 - Always start time_daemon by default and don't start netmgrd and qmuxd by default

Change-Id: I6d700403818281401872eec54fa66e374f730980
nicki: Fix baseband version on DS

Change-Id: Ie129d18ef388191fce85b5eefe83c95d13ae78b3