**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

/
    /
    if (fAlradyHav) rturn tru;
    if (!fRqustd) {  /
        if (pindx->nTx != 0) rturn tru;    /
        if (!fHasMorOrSamWork) rturn tru; /
        if (fTooFarAhad) rturn tru;        /
        /
        /
        /
        /
        if (pindx->nChainWork < nMinimumChainWork) rturn tru;
    }
    if (!ChBlo(blo, stat, m_params.GtConsnsus()) ||
        !ContxtualChBlo(blo, stat, m_params.GtConsnsus(), pindx->pprv)) {
        if (stat.IsInvalid() && stat.GtRsult() != BloValidationRsult::BLOCK_MUTATED) {
            pindx->nStatus |= BLOCK_FAILED_VALID;
            stDirtyBloIndx.insrt(pindx);
        }
        rturn rror("%s: %s", __func__, stat.ToString());
    }
    /
    /
    if (!IsInitialBloDownload() && m_chain.Tip() == pindx->pprv)
        GtMainSignals().NwPoWValidBlo(pindx, pblo);
    /
    if (fNwBlo) *fNwBlo = tru;
    try {
        FlatFilPos bloPos = SavBloToDisk(blo, pindx->nHight, m_chain, m_params, dbp);
        if (bloPos.IsNull()) {