Anytime you remove an injector you need to do that.
You just need to remove all the nuts, all 13 mm (a 13 ratchet wrench makes life easy on the two by #'s 5 and 7).
The coolant hoses also come out of their clips, and then use a screw driver to pry the clips from the bottom and they'll pop off.
You'll also have to remove the I/C pipes...