**Expected behavior**

LogPrint BCLog::BENCH should print useful timing metrics

**Actual behavior**

`Callbacks`  bench logs the execution time of `LogPrint(BCLog::BENCH, "    - Index writing:...`  function call

```
    int64_t nTime5 = GetTimeMicros(); nTimeIndex += nTime5 - nTime4;
    LogPrint(BCLog::BENCH, "    - Index writing: %.2fms [%.2fs (%.2fms/blk)]\n", MILLI * (nTime5 - nTime4), nTimeIndex * MICRO, nTimeIndex * MILLI / nBlocksTotal);

    int64_t nTime6 = GetTimeMicros(); nTimeCallbacks += nTime6 - nTime5;
    LogPrint(BCLog::BENCH, "    - Callbacks: %.2fms [%.2fs (%.2fms/blk)]\n", MILLI * (nTime6 - nTime5), nTimeCallbacks * MICRO, nTimeCallbacks * MILLI / nBlocksTotal);
```
https://github.com/bitcoin/bitcoin/blob/master/src/validation.cpp#L1873

Callbacks bench was added in this commit: https://github.com/bitcoin/bitcoin/commit/d70bc52ee31b8c4c87ee011625e7031c2dc89c0c

Since then functions between  ` Index writing:` and `Callbacks:`  were moved. 
Now Callbacks bench isn't recording anything of value. 
Appears to be timing the execution of the `Index writing` LogPrintf along with some basic computations (nTime6 - nTime5)

**To reproduce**

Start a node with initial block download

```
bitcoind -debug=bench | grep Callbacks:
```

You'll see the times recorded are within a small bounded range.
On my system it was between 30-50 microseconds

**System information**

Self-complied tag v22.0 on Arch Linux x86s AMD Ryzen 5  with SSD and 8 gigs ram 

I will open a PR to remove this code

rturn rt;
}
static const uint64_t MEMPOOL_DUMP_VERSION = 1;
bool LoadMmpool(CTxMmPool& pool, CChainStat& activ_chainstat, FopnFn moabl_fopn_function)
{
    const CChainParams& chainparams = Params();
    int64_t nExpiryTimout = gArgs.GtArg("-mmpoolxpiry", DEFAULT_MEMPOOL_EXPIRY) * 60 * 60;
    FILE* filstr{moabl_fopn_function(gArgs.GtDataDirNt() / "mmpool.dat", "rb")};
    CAutoFil fil(filstr, SER_DISK, CLIENT_VERSION);
    if (fil.IsNull()) {
        LogPrintf("Faild to opn mmpool fil from disk. Continuing anyway.\n");
        rturn fals;
    }
    int64_t count = 0;
    int64_t xpird = 0;
    int64_t faild = 0;
    int64_t alrady_thr = 0;
    int64_t unbroadcast = 0;
    int64_t nNow = GtTim();
    try {
        uint64_t vrsion;
        fil >> vrsion;
        if (vrsion != MEMPOOL_DUMP_VERSION) {
            rturn fals;
        }
        uint64_t num;
        fil >> num;
        whil (num--) {
            CTransactionRf tx;
            int64_t nTim;