refactor: Remove some dead code from the trashbin Helper

Signed-off-by: Carl Schwan <carlschwan@kde.org>

Author: CarlSchwan

apps/files_trashbin/lib/Helper.php

@@ -118,21 +118,4 @@ private static function buildFileInfo(ICacheEntry $entry, string $dir, ?string &
 		$i['deletedBy'] = $extraData[$originalName][$timestamp]['deletedBy'] ?? null;
 		return new FileInfo($absoluteDir . '/' . $i['name'], $storage, $internalPath . '/' . $i['name'], $i, $mount);
 	}
-
-	/**
-	 * Format file infos for JSON
-	 *
-	 * @param \OCP\Files\FileInfo[] $fileInfos file infos
-	 */
-	public static function formatFileInfos($fileInfos) {
-		$files = [];
-		foreach ($fileInfos as $i) {
-			$entry = \OCA\Files\Helper::formatFileInfo($i);
-			$entry['id'] = $i->getId();
-			$entry['etag'] = $entry['mtime']; // add fake etag, it is only needed to identify the preview image
-			$entry['permissions'] = Constants::PERMISSION_READ;
-			$files[] = $entry;
-		}
-		return $files;
-	}
 }