Prusa i3 Mk3 Noctua Extruder Cover Remix

A stl-remix on the standard mk3-extruder-cover, that removes the venturi-hole and instead makes a hole of aproximate size to the side of the heatsink to lower the needed static pressure of the fan to push air through.
This will push less air through the heatsink for a strong fan. For the noctua included in the prusa mk3/mk3s, prusa added the venturi hole to compensate for the low static pressure, giving the fan some head-room, pushing air out through the venturi-hole. The idea was to pull air i