Reverted back extra changes

Author: gelanivishal

app/code/Magento/Bundle/Block/Catalog/Product/View/Type/Bundle/Option/Multi.php

@@ -16,21 +16,4 @@ class Multi extends \Magento\Bundle\Block\Catalog\Product\View\Type\Bundle\Optio
      * @var string
      */
     protected $_template = 'Magento_Bundle::catalog/product/view/type/bundle/option/multi.phtml';
-
-    /**
-     * @inheritdoc
-     * @since 100.2.0
-     */
-    protected function assignSelection(\Magento\Bundle\Model\Option $option, $selectionId)
-    {
-        if (is_array($selectionId)) {
-            foreach ($selectionId as $id) {
-                if ($id && $option->getSelectionById($id)) {
-                    $this->_selectedOptions[] = $id;
-                }
-            }
-        } else {
-            parent::assignSelection($option, $selectionId);
-        }
-    }
 }