fix the problem of reasoning without templates

fastfold/model/hub/alphafold.py

@@ -324,7 +324,7 @@ class AlphaFold(nn.Module):
                         [feats["msa_mask"], template_embeds["template_mask"]],
                         dim=-2,
                     )
-        del template_feats, template_embeds
+            del template_feats, template_embeds
 
         # Embed extra MSA features + merge with pairwise embeddings
         if self.config.extra_msa.enabled: