Flower exact a lot of energy from the plant; seed pods suck up even more. By removing them now this available energy can go back into the plant, which in turn produces more branches and ultimately more flowers.
It is a simple possess, pinch the base of the seed pod cluster with your thumb and index finger and bend to break it off. Try not to remove any of the new leaf growth if you can help it. The You Tube video below explains this very well.