Revert "[BUGFIX] Fix for $documentArray being null after function…

… `getDocumentById` is called (#1345)"

This reverts commit fdc2975.

Classes/Controller/AbstractController.php

@@ -512,14 +512,11 @@ protected function buildSimplePagination(PaginationInterface $pagination, Pagina
      */
     private function getDocumentByUid(int $documentId)
     {
-        // TODO: implement multiView as it is in getDocumentByUrl
         $doc = null;
         $this->document = $this->documentRepository->findOneByIdAndSettings($documentId);
 
         if ($this->document) {
             $doc = AbstractDocument::getInstance($this->document->getLocation(), $this->settings, true);
-            // fix for count(): Argument #1 ($value) must be of type Countable|array, null given
-            $this->documentArray[] = $doc;
         } else {
             $this->logger->error('Invalid UID "' . $documentId . '" or PID "' . $this->settings['storagePid'] . '" for document loading');
         }