Hi Yanus3D, you can turn off writing UV coordinates to OBJ and LWO formats in moi.ini (Options > General > "Edit .ini file" button):

[OBJ Export]
<...>
WriteTextureCoordinates=y

[LWO]
<...>
WriteTextureCoordinates=y


There is not currently a way to disable writing vertex normals but I will add that.

- Michael