Plugins: Remove an unused variable after [35953].

Fixes #35050.
Built from https://develop.svn.wordpress.org/trunk@36581


git-svn-id: http://core.svn.wordpress.org/trunk@36548 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-wp-plugin-install-list-table.php

@@ -498,7 +498,6 @@ class WP_Plugin_Install_List_Table extends WP_List_Table {
 			 */
 			$action_links = apply_filters( 'plugin_install_action_links', $action_links, $plugin );
 
-			$date_format = __( 'M j, Y @ H:i' );
 			$last_updated_timestamp = strtotime( $plugin['last_updated'] );
 		?>
 		<div class="plugin-card plugin-card-<?php echo sanitize_html_class( $plugin['slug'] ); ?>">

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-36580';
+$wp_version = '4.5-alpha-36581';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.