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https://wordimpress.com/removing-styles-scripts-from-your-wordpress-parent-theme/

https://wordpress.stackexchange.com/questions/189985/how-to-properly-dequeue-scripts-and-styles-in-child-theme
<?php
// get the name of styles and scripts from the parent functions.php file

function powell_WI_dequeue_script() { // this goes into the child theme
	// Dequeue Styles
	wp_dequeue_style( 'flexslider' );
	wp_dequeue_style( 'owl.carousel' );
	wp_dequeue_style( 'shapely-fonts' );
	
	// Dequeue Scripts
	wp_dequeue_script( 'flexslider' );
	wp_dequeue_script( 'owl.carousel' );	
}
 
add_action( 'wp_print_scripts', 'powell_WI_dequeue_script', 100 );