implement temporary file cleanup

owrx/controllers/imageupload.py

@@ -30,7 +30,6 @@ class ImageUploadController(AuthorizationMixin, AssetsController):
         # TODO: limit file size
         # TODO: check image mime type, if possible
         contents = self.get_body()
-        # TODO: clean up files after timeout or on shutdown
         with open(self.getFilePath(), 'wb') as f:
             f.write(contents)
         self.send_response(json.dumps({"uuid": self.uuid}), content_type="application/json")