rtl8821au not found

This may not be for everyone but I discovered I no longer needed this module, so I uninstalled it with dkms.

First I ran:
dkms status

to see which module was installed:
rtl8821au/5.12.5.2

Then to remove it from all kernel versions:
sudo dkms remove rtl8821au/5.12.5.2 --all