(Credits to Jonno whose answer led me to the solution)
Go to systray and open Language preferences
. Click Options
for each language that has an extra kayboard that you want to remove.
In Keyboards
section click Add a keyboard
and select a keyboard that appears in your systray and which you want to remove. This adds a new input option for the selected language. After you add the keyboard, click it and click on a Remove
button. After that, the keyboard should disappear also from systray.
(Note that I did not see a keyboard which I want remove in Keyboards
section thus I had to add it first to be able to remove it afterwards.)