I didn't install the Avast Passwords function.
I honestly have no idea what you did - I don't even know if you did a custom install, which I did. I didn't install the avast password function and it isn't listed in my smart scan. Attached custom install screen of my installation.
What I do know is that your image is within the avastUI, so avast password must be there somewhere or that screen couldn't be there. All your image shows is that you haven't activated it for password use in your browser. It doesn't mean it isn't installed.
I suggest that you check control panel > programs and features > avast antivirus > Change and ensure that it is uninstalled/removed.