Delete invalid judge of pnfd_id.
Issue-ID: VFC-1416
Change-Id: I80051eee2eb689f5947b53dcce076852eb6fe408
Signed-off-by: hewei-cmss <hewei@cmss.chinamobile.com>
             if pnfdVersion == "":
                 pnfdName = pnfd["metadata"].get("name", "")
 
-        if pnfd_id:
-            other_pnf = PnfPackageModel.objects.filter(pnfdId=pnfd_id)
-            if other_pnf and other_pnf[0].pnfPackageId != pnfd_info_id:
-                logger.info('PNFD(%s) already exists.' % pnfd_id)
-                raise CatalogException("PNFD(%s) already exists." % pnfd_id)
+        other_pnf = PnfPackageModel.objects.filter(pnfdId=pnfd_id)
+        if other_pnf and other_pnf[0].pnfPackageId != pnfd_info_id:
+            logger.info('PNFD(%s) already exists.' % pnfd_id)
+            raise CatalogException("PNFD(%s) already exists." % pnfd_id)
 
         pnf_pkgs.update(
             pnfdId=pnfd_id,