u/Informal_Kangaroo321

All right everybody, I'm pretty much at your mercy at this point. I've tried 30 different things and I can't seem to figure out what this bar is or how to get rid of it. It's been there forever and I'm finally annoyed enough at it. I've tried the command gamerule/locatorbar/false and besides entirely hiding the HUD, nothing is working. Does anyone have any idea of what it is and how to get rid of it?

So u went to measure my windows to install trim to renovate and i found these. Not sure what they are, so i would need help identifying them but also how to proceed with killing them.

Update - i should mention they are different sizes and color but all are smaller than a grain of rice. I had to zoom in for these photos