My wisdom teeth are developing in my nasel cavity, how are they going to remove them?

Very carefully. Instead of your nasal cavity, you probably meant to say your wisdom teeth are developing in or close proximity to your maxillary sinus, which is common for upper wisdom teeth. Your dentist or surgeon will remove the teeth by a surgical approach to expose and/or uncover the wisdom teeth, and likely place sutures to close the incision.
Third Molar erupting. A nasal presentation of erupting 3rd molars is very uncommon. An oral surgeon is best suited to manage this complication. It will be probably be done in a hospital type setting with you asleep.