How to hide/delete the symbol pin types (named as pas/sup) from the eagle schematics?
Simply run the following command in the schematic window:

display -pins


If you want to view them again:

display pins




As is the way with Eagle, you can also do it from the toolbar. Simply click on the visible layers/display button, find layer 93 (Pins) and hide it by clicking the number so it is no longer blue. Then click OK.