You have to zoom in using the + magnifying glass untill you can see the wave form and the "click" in the window. You then select the "click" by left clicking & holding down the button on your mouse. to the left of the "click", then dragging to the right untill the "click" is selected. Release the mouse button then click on edit, cut and the "click will be removed.
It's the only certain way to remove the clicks but there are programs that try to do it for you when recording. Personally I've had only bad results from these as sometimes they remove some of the musical sounds as well.