Is there any alternative meaning of "out of court" than the one we knoe linked with real life court situations. The sentence which I sense it should mean something else is as follows:
However, its real purpose is not to encourage controversy but to draw the committed student of true philosophy away from this discussion altogether, to leave out of court matters of opinion and belief, and to move on to the more serious concerns which can be treated according to the principles of demonstrations and hence of philosophy proper.
quoted from the 21st page of the following article:
https://www.jstor.org/stable/1595834?seq=1#page_scan_tab_contents
