fix note creation on encrypted s3 storage

lib/Controller/NotesController.php

@@ -176,7 +176,6 @@ public function get(int $id) : JSONResponse {
 	public function create(string $category) : JSONResponse {
 		return $this->helper->handleErrorResponse(function () use ($category) {
 			$note = $this->notesService->create($this->helper->getUID(), '', $category);
-			$note->setContent('');
 			return $note->getData();
 		});
 	}

lib/Service/NotesService.php

@@ -108,18 +108,6 @@ public function create(string $userId, string $title, string $category) : Note {
 		// create file
 		$file = $folder->newFile($filename);
 
-		// try to write some content
-		try {
-			// If server-side encryption is activated, the server creates an empty file without signature
-			// which leads to an GenericEncryptionException('Missing Signature') afterwards.
-			// Saving a space-char (and removing it later) is a working work-around.
-			$file->putContent(' ');
-		} catch (\Throwable $e) {
-			// if writing the content fails, we have to roll back the note creation
-			$this->delete($userId, $file->getId());
-			throw $e;
-		}
-
 		return new Note($file, $notesFolder, $this->noteUtil);
 	}