message: remove unserialized fields from CGrapheneBlock and CGrapheneSet
  [skip ci]
diff: -------
  -Draft version 0.1.2
  +Draft version 0.1.3
  '''Comments welcome.'''
  -------
  @@ -99,10 +99,6 @@ We defer description of these data structures to separate specification document
  |nBlockTxs||uint64_t||8 bytes||Number of Transactions in the block
  |-
  |grapheneSet||CGrapheneSet||variable||Encapsulates Graphene set reconciliation logic
  -|-
  -|version||uint64_t||8 bytes||Graphene block version
  -|-
  -|computeOptimized||bool||1 byte||1 if Graphene block uses CVariableFastFilter and 0 if it uses CBloomFilter
  |}
  The vAdditionalTxs field should include at least the coinbase transaction, since it is not possible for it to be in the receiver's mempool. The values ''shorttxidk0'' and ''shorttxidk1'' are derived from the first and last 64 bits in the following SHA256 hash ''h''. The sender generates the random 64 bit ''sipHashNonce'', whose bits are appended to the end of the block header bits. The SHA256 hash of the entire collection of bits is then hashed to form ''h''.
  @@ -121,12 +117,8 @@ The vAdditionalTxs field should include at least the coinbase transaction, since
  |-
  |shorttxidk1||uint64_t||8 bytes||Right half of SipHash key
  |-
  -|version||uint64_t||8 bytes||Graphene set version
  -|-
  |ibltSalt||uint32_t||4 bytes||Entropy for IBLT hash functions
  |-
  -|computeOptimized||bool||1 byte||1 if Graphene set uses CVariableFastFilter and 0 if it uses CBloomFilter
  -|-
  |encodedRank||<nowiki>vector<unsigned char></nowiki>||ordered * ceil(n log(n))/8 bytes||Order information for items in set
  |-
  |setFilter||CBloomFilter||variable||Bloom filter containing items in set
  