ENGCOM-2387: Remove commented code & remove space #16874

 - Merge Pull Request magento/magento2#16874 from ronak2ram/magento2:2.3-develop-code-clean
 - Merged commits:
   1. 46081df
   2. 3d7eb48

Author: magento-engcom-team

app/code/Magento/Backend/Block/Widget/Grid/Column/Filter/Datetime.php

@@ -26,7 +26,6 @@ public function getValue($index = null)
     {
         if ($index) {
             if ($data = $this->getData('value', 'orig_' . $index)) {
-                // date('Y-m-d', strtotime($data));
                 return $data;
             }
             return null;

app/code/Magento/Backend/Block/Widget/Grid/Massaction/AbstractMassaction.php

@@ -277,13 +277,13 @@ public function getGridIdsJson()
         }
         /** @var \Magento\Framework\Data\Collection $allIdsCollection */
         $allIdsCollection = clone $this->getParentBlock()->getCollection();
-        
+
         if ($this->getMassactionIdField()) {
             $massActionIdField = $this->getMassactionIdField();
         } else {
             $massActionIdField = $this->getParentBlock()->getMassactionIdField();
         }
-        
+
         $gridIds = $allIdsCollection->setPageSize(0)->getColumnValues($massActionIdField);
         if (!empty($gridIds)) {
             return join(",", $gridIds);

app/code/Magento/Backend/Block/Widget/Grid/Massaction/Extended.php

@@ -274,13 +274,13 @@ public function getGridIdsJson()
 
         /** @var \Magento\Framework\Data\Collection $allIdsCollection */
         $allIdsCollection = clone $this->getParentBlock()->getCollection();
-        
+
         if ($this->getMassactionIdField()) {
             $massActionIdField = $this->getMassactionIdField();
         } else {
             $massActionIdField = $this->getParentBlock()->getMassactionIdField();
         }
-        
+
         $gridIds = $allIdsCollection->setPageSize(0)->getColumnValues($massActionIdField);
 
         if (!empty($gridIds)) {