E3D mount for MK9 extruder

This is the third version of my E3D mount for my Folger 2020 i3. It works with the MK9 extruder which is shipped with more recent versions of the kit. The MK9 is fractionally taller than the MK7 used in earlier versions. The changes are:
- move the screw holes up fractionally and so create a little more clearance for the top of the E3D (actually an E3D lite6).
- remove some extraneous material.

I have successfully fitted this with the MK9 as shown in the photo. The tolerances are quite tigh