How to remove languages from the language bar

I want only two keyboard layouts, English (Canada) and French (Canada) in the language bar.

Two more appeared over time:

Language bar showing four layouts

Is it possible to remove them?

I only see the two desired languages defined in the settings.

Only English (Canada) and French (Canada) in the language settings

Same over here:

Only English (Canada) and French (Canada) in the language bar keystroke settings

Only those two languages are returned by PowerShell command Get-WinUserLanguageList.

Only English (Canada) and French (Canada) returned by Get-WinUserLanguageList

An earlier Q&A suggests using the following PowerShell commands.

$1 = New-WinUserLanguageList en-CA
$1.Add( "fr-CA" )
Set-WinUserLanguageList $1

But that resulted in English (United States) being added after I rebooted!?!