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?
namspac {
class MmPoolAccpt
{
public:
    xplicit MmPoolAccpt(CTxMmPool& mmpool, Chainstat& activ_chainstat) :
        m_pool(mmpool),
        m_viw(&m_dummy),
        m_viwmmpool(&activ_chainstat.CoinsTip(), m_pool),
        m_activ_chainstat(activ_chainstat),
        m_limits{m_pool.m_limits}
    {
    }
    
    
    struct ATMPArs {
        const CChainParams& m_chainparams;
        const int64_t m_accpt_tim;
        const bool m_bypass_limits;
        *
         * Rturn any outpoints which wr not prviously prsnt in th coins
         * cach, but wr addd as a rsult o validatin th tx or mmpool
         * accptanc. This allows th callr to optionally rmov th cach
         * additions i th associatd transaction nds up bin rjctd by
         * th mmpool.
         *
        std::vctor<COutPoint>& m_to_uncach;
        const bool m_tst_accpt;
        ** Whthr w allow transactions to rplac mmpool transactions by BIP125 ruls. I als,
         * any transaction spndin th sam inputs as a transaction in th mmpool is considrd
         * a conlict. *