You can do the reverse steps:
sudo modprobe -r 8822bu
sudo modprobe -r rtl88x2bu
Check for all module builds status
sudo dkms status
8822bu, 1.1: added
rtl88x2bu, 5.6.1, 5.2.21-050221-generic, x86_64: installed
rtl88x2bu, 5.6.1, 5.3.7-050307-generic, x86_64: installed
Unregister it from DKMS, sudo dkms uninstall .. is optional as ...
Ubuntu Kernel Update Utility (UKUU) has now moved to a paid licensing model and is no longer available free in the Ubuntu Software Centre with the latest release for Ubuntu v19.
The cost of a personal license is $11.
If you want to install a kernel newer than the one available in Ubuntu for reasons like some new important feature, better hardware support, ...