reset MolecularFunction database before Protein import

ippisite/ippidb/management/commands/import_v1_data.py

 from django.core.management import BaseCommand, CommandError
 import mysql.connector
 
-from ippidb.models import Bibliography, Protein, Taxonomy
+from ippidb.models import Bibliography, Protein, Taxonomy, MolecularFunction
 
 class Command(BaseCommand):
 
@@ -59,6 +59,8 @@ class Command(BaseCommand):
             self.stdout.write(self.style.SUCCESS('Successfully flushed protein table'))
             Taxonomy.objects.all().delete()
             self.stdout.write(self.style.SUCCESS('Successfully flushed taxonomy table'))
+            MolecularFunction.objects.all().delete()
+            self.stdout.write(self.style.SUCCESS('Successfully flushed molecular function table'))
             for row in rows:
                 try:
                     p = Protein()