Remove unused namespace from ui export

Author: Yuriy Tkachenko

app/code/Magento/Ui/Model/Export/ConvertToCsv.php

@@ -8,7 +8,6 @@
 use Magento\Framework\App\Filesystem\DirectoryList;
 use Magento\Framework\Exception\LocalizedException;
 use Magento\Framework\Filesystem;
-use Magento\Framework\Filesystem\Directory\WriteInterface;
 use Magento\Ui\Component\MassAction\Filter;
 
 /**
@@ -17,7 +16,7 @@
 class ConvertToCsv
 {
     /**
-     * @var WriteInterface
+     * @var DirectoryList
      */
     protected $directory;
 

app/code/Magento/Ui/Model/Export/ConvertToXml.php

@@ -12,7 +12,6 @@
 use Magento\Framework\Convert\ExcelFactory;
 use Magento\Framework\Exception\LocalizedException;
 use Magento\Framework\Filesystem;
-use Magento\Framework\Filesystem\Directory\WriteInterface;
 use Magento\Ui\Component\MassAction\Filter;
 
 /**
@@ -21,7 +20,7 @@
 class ConvertToXml
 {
     /**
-     * @var WriteInterface
+     * @var DirectoryList
      */
     protected $directory;