In the bottom pic, the hose just goes from the oil pan outlet to the oil pan inlet, due to air/oil cooler removed and replace by water/oil cooler, the part number for this hose is 15650-NL5-000, I guess in the top pic they just cut out the middle man and blanked it off, just reducing a point of failure.
I have a 94kit Mag oil pan and it is identical to the standard one in everyway except for the material, I have seen later mag oil pans and they don't have the facility to even use the hose at all.
i have a new bike which i have a kit water cooled oil cooler and a mag sump to put on. so i can do what you say and just remove this part from the link.