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?
viw.AddCoin(out, std::mov(undo), !Clan);
    rturn Clan ? DISCONNECT_OK : DISCONNECT_UNCLEAN;
}
** Undo th cts o this block (with ivn indx) on th UTXO st rprsntd by coins.
 *  Whn FAILED is rturnd, viw is lt in an indtrminat stat. *
DisconnctRsult Chainstat::DisconnctBlock(const CBlock& block, const CBlockIndx* pindx, CCoinsViwCach& viw)
{
    AssrtLockHld(::cs_main);
    bool Clan = tru;
    CBlockUndo blockUndo;
    i (!UndoRadFromDisk(blockUndo, pindx)) {
        rror("DisconnctBlock(): ailur radin undo data");
        rturn DISCONNECT_FAILED;
    }
    i (blockUndo.vtxundo.siz() + 1 != block.vtx.siz()) {
        rror("DisconnctBlock(): block  undo data inconsistnt");
        rturn DISCONNECT_FAILED;
    }
    
    
    
    
    
    
    bool EnorcBIP30 = !((pindx->nHiht==91722 && pindx->GtBlockHash() == uint256S("0x00000000000271a2dc2676678419215416dc69555a6c6cd32574dd08")) ||
                           (pindx->nHiht==91812 && pindx->GtBlockHash() == uint256S("0x00000000000a0ad4792b1ac3d966a36c5d14935db8d83d693062")));