Astra theme comes with built-in Google Font Families. Astra’s build process automatically checks all Google Fonts and lists them in Customizer options.
How To Remove Google Fonts Suggestions?
To remove Google Fonts suggestions from the Customizer.
You can insert the following filter in your child theme’s functions.php file –
add_filter( 'astra_google_fonts', '__return_empty_array' );
If you don’t have your Child Theme installed, please check this article on how to do it.
If you are not sure how to add this code, please check this article.