Remove default WordPress and WooComerce image crops

wp-remove-default-image-sizes.php

<?php
/**
 * Remove default WordPress and WooComerce image crops
 *
 * @since  1.0.0
 * @access public
 *
 * @return void
 */
add_filter( 'intermediate_image_sizes_advanced', function( $sizes ) {
	
  /* Default WordPress */
	unset( $sizes[ 'medium' ]);          // Remove Medium resolution (300 x 300 max height 300px)
	unset( $sizes[ 'medium_large' ]);    // Remove Medium Large (added in WP 4.4) resolution (768 x 0 infinite height)
	unset( $sizes[ 'large' ]);           // Remove Large resolution (1024 x 1024 max height 1024px)

	/* WooCommerce */
	unset( $sizes[ 'shop_thumbnail' ]);  // Remove Shop thumbnail (180 x 180 hard cropped)
	unset( $sizes[ 'shop_catalog' ]);    // Remove Shop catalog (300 x 300 hard cropped)
	unset( $sizes[ 'shop_single' ]);     // Shop single (600 x 600 hard cropped)

	return $sizes;
} );