Hello there!
To remove the countries from the selector and the same types of currencies, do the following steps:
1º Open the code of your store.
2º Locate the file called: country-localization.liquid
3º Delete all the code. (Be sure to make a backup copy of the original file. To do this, for example, copy the code and paste it into a notepad.)
4º Replace the original code with the following code:
{%- assign selected_currencies = '' -%}
{%- for country in localization.available_countries -%}
{%- unless selected_currencies contains country.currency.iso_code -%}
{%- assign selected_currencies = selected_currencies | append: country.currency.iso_code | append: ',' -%}
- {{- country.currency.iso_code }}
{{ country.currency.symbol }}
{%- endunless -%}
{%- endfor -%}
This should fix your problem!