RMX1971: rootdir: Clean-up init.qcom.early_boot.sh

Clean-up init.qcom.early_boot.sh so it just check (re)boot reason
and sets ro.vendor.alarm_boot appropriately. The rest of the script
can be removed as
* we don't want to override lcd_density
* setting of vblankoffdelay is being moved to init.qcom.rc
* chown/chmod of several sysfs knobs as well
* vendor.media.target.version and vendor.sys.media.target.version
  properties are being set in vendor.prop
* service vendor.atfwd is started automatically

Change-Id: I7cc9ade191a3c3707f6cb534ba6d962d9193e07b
Signed-off-by: kaderbava <ksbava7325@gmail.com>