I doubt the banjo fitting is readily available...might need to source a used one, maybe need to pick up another EVO that comes with it.
Don't remove the hose fitting unless you have a new square teflon seal, or you get a new high pressure line that comes with it.
Unscrew the fitting to remove if off the EVO banjo...might be
very snug (
guessing you know that already). It just spins on the end of the high pressure line. The right sized wrenches will help remove it and lessen chances of damage to either part.
This is what the EVO looks like with the high pressure line removed.
New high pressure line looks like this:
The looped end, upper right, connects to the EVO. If you expect to replace the high pressure line, you could cut the hose and then work on separating the two fittings one they are off the car. Be sure you know what work is involved in replacing that line before you sacrifice it, tho.
As for the lower IC tube, you might get by without that last bolt when you put it back together.