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Here is a video on to remove the icons!
Most cameras will have an option to remove the display icons from the HDMI feed as long as the camera has a "clean" HDMI output.
A "clean" HDMI output means a video signal through a camera's HDMI connector that includes no text or graphic overlays showing camera status, exposure variables, etc.
It's just an image of what the camera sees through its lens, and nothing more.
You should be able to remove these display icons from your stream by opening the camera's settings, and turning them off ( usually cameras will list this setting as "Output Display" or "HDMI Info Display")