I am trying to remove visual studio code that is in code_1.72.2-1665614327_amd64.deb.
I used this to install.
gdebi code_1.72.2-1665614327_amd64.deb
I have tried this to un-install.
andy@7 ~> sudo dpkg -r code_1.72.2-1665614327_amd64.deb
dpkg: error: you must specify packages by their own names, not by quoting the names of the files they come in
According to this, there should be a /usr/share/code/ directory, but it does not exist.
Does that mean that the .deb was not installed?
Hi think r needs name as here: Seems to be whole file install and just name to remove. Towards bottom.
The package name for 'visual studio' is 'code'
so
sudo apt purge code
will remove the package, configs and any other traces of visual studio 
sudo apt purge code
Reading package lists... Done
Building dependency tree
Reading state information... Done
No apt package "code", but there is a snap with that name.
Try "snap install code"
E: Unable to locate package code
I do not think it was ever installed.
Correct.
This was the proof you were looking for 