remove google fonts to use self-hosted fonts

Hi there,
we use Customizr Theme for this site for several years.
Selected font was “Open Sans” we use as self-hosted font.
Because of GDPR we disabled Google Fonts by Autoptimize Plugin.
That worked until last update to Customizr 4.3.0

After the update a test via https://webbkoll.dataskydd.net/en/results?url=http%3A%2F%2Fmein-ei.nrw shows Third-Party-Request to
//fonts.googleapis.com/css?family=Open+Sans&display=swap

I tried to dequeue google fonts by adding

//* Dequeue Styles - Remove Google Fonts from Customizr Theme
add_action( 'wp_print_styles', 'czr_fn_maybe_enqueue_gfonts' );
function czr_fn_maybe_enqueue_gfonts() {
      wp_dequeue_style( 'czr-gfonts' );
}

to functions.php in my childtheme.
But this doesn’t work at all.

Do you have a solution for this?

Thanks in advance

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