iftee

<?php
/*
 * Custom filter to remove default image sizes from WordPress.
 */
 
/* Add the following code in the theme's functions.php and disable any unset function as required */
function remove_default_image_sizes( $sizes ) {
  
  /* Default WordPress */
  unset( $sizes[ 'thumbnail' ]);       // Remove Thumbnail (150 x 150 hard cropped)