I think they are Google map built in icons, i didn't try to remove them because they are useful for my apps for location sharing.
If there is no built in property to hide them, you can simply add overlaying panel on top of gmap bottom border.
So I tried to find where these icons were comming from, and found that they are Map's Toolbar icons...
Searching further allowed me to realize these could be disabled and so I searched B4X forum for "map toolbar" and found my answer...