remove wrong migrations

Author: mariofranke

content/migrations/0006_auto_20201008_1036.py

@@ -78,7 +78,7 @@ def generate_preview(self):
             os.makedirs(os.path.join(settings.MEDIA_ROOT,preview_folder))
         base_filename = os.path.splitext(os.path.basename(self.pdf.name))[0] + '.jpg'
         # get images for every page
-        pages = convert_from_path(self.pdf.path,last_page=2)
+        pages = convert_from_path(self.pdf.path, last_page=2)
         # save first page to disk
         pages[0].save(os.path.join(settings.MEDIA_ROOT,preview_folder, base_filename))
         return os.path.join(preview_folder, base_filename)