gpo for selected icons no, but you can leave only the default icons activated.
try this:"
Having worked with 2008R2 GPO settings for Windows 7, I can tell you this about the "Notification Area" icons: You can either:
Turn it off completely or turn it on completely ("hide the notification area," works for both XP and 7)
Have it show all, or continue to show the icons the user specifies ("turn off notification area cleanup," works for both XP and 7)
Disable only certain icons included in the default GPO, such as Action Center, Networking, Battery Meter, Volume. As far as I can tell, those are the only 4 Notification Area icons you can work with via the default 2008R2 GPO (and these only work for Vista and above or 7 and above).
All of these options are available in User Configuration\Administrative Templates\Start Menu and Taskbar.
Otherwise, you are very limited to what you can control in the Notification Area via GPO."