Break up the brick with an electric demolition hammer (like a hammer drill on steroids, but not as big as an electric jackhammer). The first brick will need to be pulverized, but once you have an opening, the adjacent bricks can be popped out speedily.
Casey

Hi Casey,
Thanks for your input. Can the demolition hammer be rented at rental centers like Home Depot? Also after I break through the first brick, how do I pop out the other bricks?

Thanks again

Once the first one is broken up and the remains pulled out, the next brick adjacent can be broken loose sideways and usually removed relatively intact, or at least in a few pieces. The more room to pry, the easier they come out. It's just that the very first brick or two hasn't got any wiggle room to pry in any direction at all.
Yes, you should be able to rent one at any tool rental place.
Wear ear protection, they're noisy.
Casey

Before putting out money for renting a demo hammer, try a brick chisel and small handled sledge hammer. Don't be gentle!

And, as sombreuil_mongrel says, use ear protection. Once lost, hearing can't be regained. AND, eye protection. I once suggested to a neighbour he might want to use goggles when chipping brick. "Nahh!" Next day, he was sporting an emergency room full eye bandage. Also, wear heavy leather gloves!