When you have your dog professionally groomed and ask the groomer to care for your dog's ears typically, you'll pick your dog up with smooth and clean ears on the outside as well as on the inside. Removing hair from the inside of your dog's ears can be done a couple of different ways, from clipping or cutting to even plucking. When you remove the fur from inside your dog's ears there is less in there for dirt debris to stick to. Your dog's ears will be easier to clean, and your dog's hearing may even improve.
The ears can be quite sensitive for many dogs. Your dog may not enjoy you touching tugging or pulling on his ears, much less plucking fur or having a small noisy clipper inside his ear. Pay attention to your dog's movements when you're grooming near his face and ears and be very cautious about how much control your dog will have moving his head around while you're grooming his ears. You don't want to cause injury, but you may need to ease his anxieties a bit with a treat.