Revert "Chybějící import?"

This reverts commit c75ab09ff2.

seminar/models/tvorba.py

@@ -6,7 +6,6 @@ import tempfile
 import logging
 
 from django.contrib.sites.shortcuts import get_current_site
-from django.core.files.storage import FileSystemStorage
 from django.db import models
 from django.utils import timezone
 from django.conf import settings