Revert some changes

src/caches/beliefpropagationcache.jl

@@ -13,8 +13,7 @@ using NamedGraphs.PartitionedGraphs:
  unpartitioned_graph
 using SimpleTraits: SimpleTraits, Not, @traitfn
 
-#default_message(inds_e) = ITensor[denseblocks(delta(i)) for i in inds_e]
-default_message(inds_e) = ITensor[denseblocks(delta(inds_e))]
+default_message(inds_e) = ITensor[denseblocks(delta(i)) for i in inds_e]
 default_messages(ptn::PartitionedGraph) = Dictionary()
 default_message_norm(m::ITensor) = norm(m)
 function default_message_update(contract_list::Vector{ITensor}; normalize=true, kwargs...)
@@ -183,7 +182,6 @@ function update_message(
 )
  vertex = src(edge)
  messages = environment(bp_cache, vertex; ignore_edges=PartitionEdge[reverse(edge)])
-
  state = factor(bp_cache, vertex)
 
  return message_update(ITensor[messages; state]; message_update_kwargs...)
@@ -269,7 +267,6 @@ Update the tensornetwork inside the cache
 """
 function update_factors(bp_cache::BeliefPropagationCache, factors)
  bp_cache = copy(bp_cache)
- factors = copy(factors)
  tn = tensornetwork(bp_cache)
  for vertex in eachindex(factors)
  # TODO: Add a check that this preserves the graph structure.