Looks like it's already "in" the loop. Both those amps can take speaker level inputs so you didn't need it but I wouldn't pull it out now.
Unless you need a quick $50 - OR - you like many in here who, like myself, want to things a bit better in the "next" phase of the design. I like the board you made already, but if you take out the LOC, you could make it a straight across setup. I like clean and linear, but after investing in all the equipment, I like when EVERYTHING is out on display too!