Child Overwrite scripts and styles

add_action( 'wp_print_scripts', 'child_overwrite_scripts', 100 );
add_action( 'wp_print_styles', 'child_overwrite_styles', 100 );
 
function child_overwrite_scripts() {
   //wp_deregister_script( 'sydney-scripts' );
   //wp_deregister_script( 'sydney-main' );
    wp_deregister_script( 'comment-reply' );
}
 
function child_overwrite_styles() {
    wp_deregister_style( 'sydney-font-awesome' );
    wp_deregister_style( 'sydney-bootstrap' );
  
}