There is no setting to completely hide one or more specific icons on the system tray because if those icons appear or not, is controlled by the application itself. Some allow you to hide their icons and some dont. The system tray area is actually a part of the windows notification subsystem and so is not actively in control. It just shows what apps want to show.
What you can do tho is remove the tray area altogether.
- Open Regedit and navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
- Create a new 32-bit DWORD value NoTrayItemsDisplay and set the value to 1 as shown in the image below:
- Close Regedit and then sign out and log back in or restart for the changes to take effect.
Note: this will hide ALL icons and you won't be able to access them.
- If you want to revert the changes just open Regedit, navigate at the same location and delete the key and restart.
The only other thing I can think of is to use an alternative app launcher/dock like Nexus or Docky (google for more options) which have the option not to reveal icons at all and also hide the windows default taskbar altogether.
If there isn't anything else, we can close the thread? let us know.