Over 1000 faces when importing stl file to matlab

hello, ive prepared a simple crater shape object (after creating it in autocad i rescaled it using mattercontrol slicer software), and exported it to matlab. when i look at the object properties (in matlab) it has about 1800 faces , 2700 edges and 900 vertices, which make it impossible to work with. i only need one face and one edge.

is there anything i can do in matlab to fix this? thanks