Merge bitcoin#24934: refactor, miner: Delete call to UpdatePackagesForAdded at beginning of addPackageTxs

7036cf5 Delete UpdatePackagesForAdded at beginning of addPackageTxs. (KevinMusgrave)

Pull request description:

  In `CreateNewBlock` (in miner.cpp), `inBlock` is cleared before `addPackageTxs`, so `inBlock` will be empty in the first call to `UpdatePackagesForAdded`. I saw this brought up in these [PR review club logs](https://bitcoincore.reviews/24538) and there didn't seem to be a definitive answer for why the call is necessary. There's also an [old PR](bitcoin#10200) where this change was going to be applied, but it got closed.

  If `addPackageTxs` can be called when `inBlock` is not empty, then maybe a test should be added for that case. All the tests seem to pass with this deletion.

ACKs for top commit:
  glozow:
    utACK 7036cf5

Tree-SHA512: 9e757b71b9035f68a0c6fef229b8cd83f1bdbe23f05bb02cc1bab8c3c177805b388bceb2bb1f0bce354791ccb29f351a6c51979b96ffe4d9fc6c978f83e36afc

Author: MacroFake

src/node/miner.cpp

@@ -310,10 +310,6 @@ void BlockAssembler::addPackageTxs(int& nPackagesSelected, int& nDescendantsUpda
     // Keep track of entries that failed inclusion, to avoid duplicate work
     CTxMemPool::setEntries failedTx;
 
-    // Start by adding all descendants of previously added txs to mapModifiedTx
-    // and modifying them for their already included ancestors
-    UpdatePackagesForAdded(inBlock, mapModifiedTx);
-
     CTxMemPool::indexed_transaction_set::index<ancestor_score>::type::iterator mi = m_mempool.mapTx.get<ancestor_score>().begin();
     CTxMemPool::txiter iter;