Hide Thumbnail Sizes from Media Uploader
<?php
function ccd_remove_image_size( $possible_sizes ) {
unset( $possible_sizes['small'] );
unset( $possible_sizes['medium'] );
unset( $possible_sizes['large'] );
return $possible_sizes;
}
add_filter( 'image_size_names_choose', 'ccd_remove_image_size' );
?>
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