Removing drivers for the Cisco Wireless Lan Adapter.
Follow the instructions for inserting and removing PC cards, PC-Cardbus cards and PCI cards provided in the document Routine Procedures.
This document also provides information about when you need to remove the driver from your system.
Note: Instructions are not provided for LM cards and mini PCI cards because they are pre-installed inside computing devices and are not meant to be installed or removed by the user.
Refer URL Removing the Driver for more information on uninstalling drivers
WLAN adapters (wireless card) / ACU (Aironet Client Utility)