Astra theme comes with built-in Google Font Families. Astra’s build process automatically checks all Google Fonts and lists them in Customizer options.
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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.