I'm trying to know how to delete this point, I searched a lot but I can not find.
If someone has the solution I'm interested
It cannot be deleted.
If it bothers you, move it to the top left corner, at (0,0) absolute coordinates.
And if it really, really bothers you, the corresponding line can be deleted from the .kicad_pcb file, it's "aux_axis_origin".
Thank you very much !