Remove duplicated and unused code.

This feature has been moved to StringTemplate and doesn't need to exist
here as well.

src/View/Helper.php

@@ -114,31 +114,6 @@ class Helper implements EventListener {
 	protected $_View;
 
 /**
- * Minimized attributes
- *
- * @var array
- */
-	protected $_minimizedAttributes = array(
-		'compact', 'checked', 'declare', 'readonly', 'disabled', 'selected',
-		'defer', 'ismap', 'nohref', 'noshade', 'nowrap', 'multiple', 'noresize',
-		'autoplay', 'controls', 'loop', 'muted', 'required', 'novalidate', 'formnovalidate'
-	);
-
-/**
- * Format to attribute
- *
- * @var string
- */
-	protected $_attributeFormat = '%s="%s"';
-
-/**
- * Format to attribute
- *
- * @var string
- */
-	protected $_minimizedAttributeFormat = '%s="%s"';
-
-/**
  * Default Constructor
  *
  * @param View $View The View this helper is being attached to.