diff --git a/app/code/Magento/Backend/Block/Dashboard/Bar.php b/app/code/Magento/Backend/Block/Dashboard/Bar.php
index 29557f12c1093..7ccb2d51ccd1b 100644
--- a/app/code/Magento/Backend/Block/Dashboard/Bar.php
+++ b/app/code/Magento/Backend/Block/Dashboard/Bar.php
@@ -38,14 +38,6 @@ public function getTotals()
      */
     public function addTotal($label, $value, $isQuantity = false)
     {
-        /*if (!$isQuantity) {
-          $value = $this->format($value);
-          $decimals = substr($value, -2);
-          $value = substr($value, 0, -2);
-          } else {
-          $value = ($value != '')?$value:0;
-          $decimals = '';
-          }*/
         if (!$isQuantity) {
             $value = $this->format($value);
         }
diff --git a/app/code/Magento/Catalog/Setup/InstallData.php b/app/code/Magento/Catalog/Setup/InstallData.php
index 5b1a10b098eb5..045ddd8a80c95 100644
--- a/app/code/Magento/Catalog/Setup/InstallData.php
+++ b/app/code/Magento/Catalog/Setup/InstallData.php
@@ -124,7 +124,6 @@ public function install(ModuleDataSetupInterface $setup, ModuleContextInterface
         // update attributes group and sort
         $attributes = [
             'custom_design' => ['group' => 'design', 'sort' => 10],
-            // 'custom_design_apply' => array('group' => 'design', 'sort' => 20),
             'custom_design_from' => ['group' => 'design', 'sort' => 30],
             'custom_design_to' => ['group' => 'design', 'sort' => 40],
             'page_layout' => ['group' => 'design', 'sort' => 50],
diff --git a/app/code/Magento/Newsletter/Block/Adminhtml/Template/Edit.php b/app/code/Magento/Newsletter/Block/Adminhtml/Template/Edit.php
index b390037f82f0a..6aae451054288 100644
--- a/app/code/Magento/Newsletter/Block/Adminhtml/Template/Edit.php
+++ b/app/code/Magento/Newsletter/Block/Adminhtml/Template/Edit.php
@@ -69,12 +69,6 @@ public function getModel()
      */
     protected function _prepareLayout()
     {
-        // Load Wysiwyg on demand and Prepare layout
-//        $block = $this->getLayout()->getBlock('head');
-//        if ($this->_wysiwygConfig->isEnabled() && $block) {
-//            $block->setCanLoadTinyMce(true);
-//        }
-
         $this->getToolbar()->addChild(
             'back_button',
             \Magento\Backend\Block\Widget\Button::class,
diff --git a/app/code/Magento/Review/Block/Adminhtml/Add/Form.php b/app/code/Magento/Review/Block/Adminhtml/Add/Form.php
index 2d619725ae201..04e6343eb43ca 100644
--- a/app/code/Magento/Review/Block/Adminhtml/Add/Form.php
+++ b/app/code/Magento/Review/Block/Adminhtml/Add/Form.php
@@ -142,11 +142,6 @@ protected function _prepareForm()
 
         $fieldset->addField('product_id', 'hidden', ['name' => 'product_id']);
 
-        /*$gridFieldset = $form->addFieldset('add_review_grid', array('legend' => __('Please select a product')));
-          $gridFieldset->addField('products_grid', 'note', array(
-          'text' => $this->getLayout()->createBlock(\Magento\Review\Block\Adminhtml\Product\Grid::class)->toHtml(),
-          ));*/
-
         $form->setMethod('post');
         $form->setUseContainer(true);
         $form->setId('edit_form');
diff --git a/app/code/Magento/Sales/Model/Order/Creditmemo.php b/app/code/Magento/Sales/Model/Order/Creditmemo.php
index 347b8bbe919bd..211cd511245be 100644
--- a/app/code/Magento/Sales/Model/Order/Creditmemo.php
+++ b/app/code/Magento/Sales/Model/Order/Creditmemo.php
@@ -584,13 +584,6 @@ public function getCommentsCollection($reload = false)
     {
         $collection = $this->_commentCollectionFactory->create()->setCreditmemoFilter($this->getId())
             ->setCreatedAtOrder();
-//
-//            $this->setComments($comments);
-//            /**
-//             * When credit memo created with adding comment,
-//             * comments collection must be loaded before we added this comment.
-//             */
-//            $this->getComments()->load();
 
         if ($this->getId()) {
             foreach ($collection as $comment) {
diff --git a/app/code/Magento/Sales/view/adminhtml/templates/order/totals.phtml b/app/code/Magento/Sales/view/adminhtml/templates/order/totals.phtml
index d23ebac84e6c2..27b82505a11d3 100644
--- a/app/code/Magento/Sales/view/adminhtml/templates/order/totals.phtml
+++ b/app/code/Magento/Sales/view/adminhtml/templates/order/totals.phtml
@@ -7,14 +7,6 @@
 // @codingStandardsIgnoreFile
 
 ?>
-<?php /*$_source = $block->getSource(); ?>
-<?php $block->setPriceDataObject($_source) ?>
-<?php if ($_source): ?>
-<table width="100%">
-    <?= $block->getChildHtml('main') ?>
-    <?= $block->getChildHtml('footer') ?>
-</table>
-<?php endif;*/ ?>
 <table class="data-table admin__table-secondary order-subtotal-table">
     <?php $_totals = $block->getTotals('footer')?>