Remove automatically added keyboard inputs and prevent them from coming back (Windows 10)

I have 2 languages installed on my computer, both with a single input method.

I have 2 keyboards: CES-CSQ and ENG-US.

enter image description here

However lately (maybe after the last Win10 update) I started to see 2 additional keyboards in my systray  – namely CES-CS and ENG-CSQ.

enter image description here

Is there there a way to remove those 2 input options (CES-CS, ENG-CSQ) which I do not see in the Control panel’s Language options?

Solution described at How to delete a keyboard in Windows 10 question does not apply to my problem because I do not see input options that I want remove in Control panel’s Language options.

Solution:

(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.)

EDIT: bugybunny’s answer helped me to prevent keyboard layouts from magically appearing whenever I connected to my PC via remote desktop (which they regularly did).