[CentOS] Bottom panel on new C7.3

Hi All,

I run these commands for previous 7.2 to hide the bottom panel.
gconftool-2 -t int  --list-type int  --set
/apps/panel/toplevels/bottom_panel/auto_hide_size 0
gconftool-2 -t bool --list-type bool --set
/apps/panel/toplevels/bottom_panel/auto_hide true

It does not seem to be working any more... I am seeing the panel.

Thoughts?

Jerry