I think I found my own answer in the developer docs.
// module enqueued google fonts
add_filter( 'fl_builder_google_fonts_pre_enqueue', function( $fonts ) {
return array();
} );
// takes care of theme enqueues
add_action( 'wp_enqueue_scripts', function() {
global $wp_styles;
if ( isset( $wp_styles->queue ) ) {
foreach ( $wp_styles->queue as $key => $handle ) {
if ( false !== strpos( $handle, 'fl-builder-google-fonts-' ) ) {
unset( $wp_styles->queue[ $key ] );
}
}
}
}, 101 );