Fix: fix broken docker create_classifier command in 2.20.6 (#11965)

docker/rootfs/usr/local/bin/document_create_classifier

@@ -15,7 +15,3 @@ else
 	echo "Unknown user."
 	exit 1
 fi
-er "$@"
-elif [[ $(id -un) == "paperless" ]]; then
-	s6-setuidgid paperless python3 manage.py document_create_classifier "$@"
-fi