log a message about Taxonomy table succesfully cleared

ippisite/ippidb/management/commands/import_v1_data.py

@@ -50,6 +50,7 @@ class Command(BaseCommand):
             Protein.objects.all().delete()
             self.stdout.write(self.style.SUCCESS('Successfully flushed protein table'))
             Taxonomy.objects.all().delete()
+            self.stdout.write(self.style.SUCCESS('Successfully flushed taxonomy table'))
             for row in rows:
                 try:
                     p = Protein()