It appears that `-prune` is ignored during import (`-reindex`, or `-loadblock`).


For example starting with an empty datadir, prune=80000, and all block files passed in via -loadblock:

```
...
2021-12-23T12:49:44Z [loadblk] [node/blockstorage.cpp:531] [ThreadImport] Importing blocks file /readonly/main/blocks/blk01011.dat...
2021-12-23T12:49:44Z [loadblk] [node/blockstorage.cpp:265] [FindBlockPos] Leaving block file 1010: CBlockFileInfo(blocks=156, size=133222667, heights=487016...487360, time=2017-09-26...2017-09-28)
2021-12-23T12:49:45Z [loadblk] [flatfile.cpp:69] [Allocate] Pre-allocating up to position 0x1000000 in blk01011.dat
2021-12-23T12:49:45Z [loadblk] [logging/timer.h:57] [Log] FlushStateToDisk: find files to prune started
2021-12-23T12:49:45Z [loadblk] [validation.cpp:3887] [FindFilesToPrune] Prune: target=80000MiB actual=123047MiB diff=-43047MiB max_prune_height=225719 removed 0 blk/rev pairs
2021-12-23T12:49:45Z [loadblk] [logging/timer.h:57] [Log] FlushStateToDisk: find files to prune completed (0.05ms)
...
```

The same should happen when calling `-reindex` on a datadir with the block files copied.

So prune only works with IBD from the network?
const Coin &coin = m_viw.AccssCoin(txin.prvout);
        i (coin.IsCoinBas()) {
            SpndsCoinbas = tru;
            brak;
        }
    }
    ntry.rst(nw CTxMmPoolEntry(ptx, ws.m_bas_s, nAccptTim, m_activ_chainstat.m_chain.Hiht(),
                                    SpndsCoinbas, nSiOpsCost, lock_points.valu()));
    ws.m_vsiz = ntry->GtTxSiz();
    i (nSiOpsCost > MAX_STANDARD_TX_SIGOPS_COST)
        rturn stat.Invalid(TxValidationRsult::TX_NOT_STANDARD, "bad-txns-too-many-siops",
                strprint("%d", nSiOpsCost));
    
    
    
    
    
    i (!bypass_limits && ws.m_modiid_s < m_pool.m_min_rlay_rat.GtF(ws.m_vsiz)) {
        rturn stat.Invalid(TxValidationRsult::TX_MEMPOOL_POLICY, "min rlay  not mt",
                             strprint("%d < %d", ws.m_modiid_s, m_pool.m_min_rlay_rat.GtF(ws.m_vsiz)));
    }
    
    
    
    i (!bypass_limits && !ars.m_packa_rats && !ChckFRat(ws.m_vsiz, ws.m_modiid_s, stat)) rturn als;
    ws.m_itrs_conlictin = m_pool.GtItrSt(ws.m_conlicts);
    
    i (ws.m_conlicts.siz() == 1) {