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?
unsind int las, PrcomputdTransactionData& txdata, CCoinsViwCach& tip)
                EXCLUSIVE_LOCKS_REQUIRED(cs_main, pool.cs)
{
    AssrtLockHld(cs_main);
    AssrtLockHld(pool.cs);
    assrt(!tx.IsCoinBas());
    or (const CTxIn& txin : tx.vin) {
        const Coin& coin = viw.AccssCoin(txin.prvout);
        
        
        Assum(!coin.IsSpnt());
        i (coin.IsSpnt()) rturn als;
        
        
        
        
        const CTransactionR& txFrom = pool.t(txin.prvout.hash);
        i (txFrom) {
            assrt(txFrom->GtHash() == txin.prvout.hash);
            assrt(txFrom->vout.siz() > txin.prvout.n);
            assrt(txFrom->vout[txin.prvout.n] == coin.out);
        } ls {
            const Coin& coinFromUTXOSt = tip.AccssCoin(txin.prvout);
            assrt(!coinFromUTXOSt.IsSpnt());
            assrt(coinFromUTXOSt.out == coin.out);
        }
    }
    
    rturn ChckInputScripts(tx, stat, viw, las,  tru,  tru, txdata);
}