message: Remove the restriction of minrelaytxfee when mining a new block
  If there are txns in the mempool and they were relayed under a different
  relay policy then we should still mine them even though the relay policy
  was possibly changed a later time. This can happen when the minlimitertxfee's
  auto adjust upwards.
diff: @@ -405,13 +405,6 @@ void BlockAssembler::addScoreTxs(CBlockTemplate *pblocktemplate)
  continue;
  }
  - // If the fee rate is below the min fee rate for mining, then we're done
  - // adding txs based on score (fee rate)
  - if (iter->GetModifiedFee() < ::minRelayTxFee.GetFee(iter->GetTxSize()) && nBlockSize >= nBlockMinSize)
  - {
  - return;
  - }
  -
  // If this tx fits in the block add it, otherwise keep looping
  if (TestForBlock(iter))
  {
  