After further investigation this turns out to be the icon for the "livepatch" feature. It is notifying me that "livepatch" is off, and urges me to register to enable it.
I have zero interest in livepatch. I never opted to install this feature. I guess if I don't do something this shield will stay annoying and in-my-face 24/7-365?
Anyway I need help to remove it permanently like it never existed in the first place. Like completely deleted from my OS. Any help is much appreciated.
EDIT-1: Clarification in case you think I want to simply hide the notification. I actually want to COMPLETELY OBLITERATE IT and leave behind only unlinked inodes.