Index: src/wp-includes/media.php
===================================================================
--- src/wp-includes/media.php	(revision 38507)
+++ src/wp-includes/media.php	(working copy)
@@ -3131,12 +3131,12 @@
 		$sizes = array();
 
 		/** This filter is documented in wp-admin/includes/media.php */
-		$possible_sizes = apply_filters( 'image_size_names_choose', array(
+		$possible_sizes = array(
 			'thumbnail' => __('Thumbnail'),
 			'medium'    => __('Medium'),
 			'large'     => __('Large'),
 			'full'      => __('Full Size'),
-		) );
+		);
 		unset( $possible_sizes['full'] );
 
 		// Loop through all potential sizes that may be chosen. Try to do this with some efficiency.