Ubuntu apt-get warning about “repository [...] doesn't support architecture 'armhf'”

[mgkuhn]

• VSCode Version:

    $ aptitude show code
    Package: code                     
    Version: 1.52.1-1608136922

• OS Version: Ubuntu 20.04.1 LTS x86_64

Why do I get on my x86_64 Ubuntu 20.04 system these two N: Skipping warnings at the end of:

# apt-get update
Hit:1 http://www-uxsup.csx.cam.ac.uk/pub/linux/ubuntu focal InRelease
Hit:2 http://www-uxsup.csx.cam.ac.uk/pub/linux/ubuntu focal-updates InRelease                                                                               
Hit:3 http://www-uxsup.csx.cam.ac.uk/pub/linux/ubuntu focal-backports InRelease                                                                             
Hit:4 http://www-uxsup.csx.cam.ac.uk/pub/linux/ubuntu focal-security InRelease                                                                              
[...]
Get:9 http://packages.microsoft.com/repos/vscode stable InRelease [3,959 B]                                                                                                              
Hit:10 https://repo.skype.com/deb stable InRelease                                                                                                                                       
Hit:11 https://packages.microsoft.com/ubuntu/20.04/prod focal InRelease                                                                                    
Hit:12 https://packages.microsoft.com/repos/ms-teams stable InRelease                             
Hit:13 http://archive.canonical.com/ubuntu focal InRelease          
Hit:14 http://dl.google.com/linux/chrome/deb stable InRelease
Get:15 http://packages.microsoft.com/repos/vscode stable/main amd64 Packages [222 kB]
Fetched 226 kB in 2s (122 kB/s)   
Reading package lists... Done
N: Skipping acquisition of configured file 'main/binary-armhf/Packages', as repository 'http://packages.microsoft.com/repos/vscode stable InRelease' doesn't support architecture 'armhf'
N: Skipping acquisition of configured file 'main/binary-arm64/Packages', as repository 'http://packages.microsoft.com/repos/vscode stable InRelease' doesn't support architecture 'arm64'

I have

# cat /etc/apt/sources.list.d/vscode.list
### THIS FILE IS AUTOMATICALLY CONFIGURED ###
# You may comment out this entry, but any other modifications may be lost.
deb [arch=amd64,arm64,armhf] http://packages.microsoft.com/repos/vscode stable main

Possibly related to #106473 and #110229

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Problema ao atualizar o Debian após instalar o vscode (Problem updating Debian after installing vscode) (#114137)
• useless architecture in ubuntu source list (#113739)

[mgkuhn]

Duplicate of #113739 and #114137.