DD#0000: fix: Updated to use fetchCol and remove loop

Author: valguss

Console/Command/RemoveUnusedMediaCommand.php

@@ -70,17 +70,11 @@ public function execute(InputInterface $input, OutputInterface $output) : void
         );
 
         $directoryIterator = new \RecursiveDirectoryIterator($imageDir);
-
-        $imagesToKeepArray = $connection->fetchAll(
+        
+        $imagesToKeep = $connection->fetchCol(
             'SELECT value FROM ' . $mediaGalleryTable
         );
 
-        $imagesToKeep = [];
-
-        foreach ($imagesToKeepArray as $image) {
-            $imagesToKeep[] = $image['value'];
-        }
-
         foreach (new \RecursiveIteratorIterator($directoryIterator) as $file) {
 
             // Cached path guard