Index: wp-admin/includes/plugin.php
===================================================================
--- wp-admin/includes/plugin.php	(revision 11119)
+++ wp-admin/includes/plugin.php	(working copy)
@@ -467,9 +467,6 @@
 	if ( ! empty($errors) )
 		return new WP_Error('could_not_remove_plugin', sprintf(__('Could not fully remove the plugin(s) %s'), implode(', ', $errors)) );
 
-	// Force refresh of plugin update information
-	delete_transient('update_plugins');
-
 	return true;
 }