Why? If you cut the drone comb out, they will just rebuild it. For any of a number of reasons, the bees want more drones in the hive. This is a pretty normal change to see during swarm season. This is the time of year when other hives that have swarmed will be sending out their new queens for mating flights - it makes good sense for your colony to produce plenty of drones so that it has a chance to spread its genes to as many other colonies as possible.
You're not using foundation - isn't the point that the bees can decide how to build comb according to their needs?
I wouldn't cut it unless your colony is struggling with increasing varroa loads. If this is the case, then in addition to other IPM methods, you should consider cutting out the drone brood before they hatch to reduce the mite population.
What do you want to achieve by removing the drone comb?