wp-includes/media.php:345Removes a new image size.
$namestringboolfunction remove_image_size( $name ) { global $_wp_additional_image_sizes; if ( isset( $_wp_additional_image_sizes[ $name ] ) ) { unset( $_wp_additional_image_sizes[ $name ] ); return true; } return false;}Introduced in 3.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/media.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.