Final answer:
Cryotherapy is the common procedure used for removing seborrheic keratoses, which involves freezing the abnormal tissue.
Step-by-step explanation:
One of the most common procedures for removing seborrheic keratoses is cryotherapy. This treatment involves the application of extreme cold to freeze and destroy the abnormal tissue. While the other options listed, such as colonoscopy, endoscopy, and electrocardiogram, are relevant medical procedures, they are not used for the treatment of seborrheic keratoses. Cryotherapy is a preferred method due to its effectiveness and minimally invasive nature.