No you can't, you would have to grind about 10mm on one side of the calliper gap, your grind would end to be assymetric because it is currently centered for the solid disc, you would also need extremely thin brake pad on this same side to do this, , so a normal pad on one side and .
You should better sell those callipers and buy the proper one, it's the simplest solution. Or if you really want to modify these callipers, you could split the calliper in two and add a custom made spacer in between the two parts of the calliper to get the right gap for the disc.