`$count` is set in `get_post_galleries()` and never used, relic from PFUI RIP.

See #27882.

Built from https://develop.svn.wordpress.org/trunk@28550


git-svn-id: http://core.svn.wordpress.org/trunk@28376 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/media.php

@@ -3030,7 +3030,6 @@ function get_post_galleries( $post, $html = true ) {
 		foreach ( $matches as $shortcode ) {
 			if ( 'gallery' === $shortcode[2] ) {
 				$srcs = array();
-				$count = 1;
 
 				$gallery = do_shortcode_tag( $shortcode );
 				if ( $html ) {