Remove pprint as it is now unused

tubesync/sync/management/commands/fix-mariadb.py

@@ -1,6 +1,5 @@
 from django import db
 from io import BytesIO, TextIOWrapper
-from pprint import pp
 from django.utils.translation import gettext_lazy
 from django.core.management import call_command
 from django.core.management.base import BaseCommand, CommandError