**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

std::string rason;
    if (fRquirStard && !IsStardTx(tx, rason))
        rturn stat.Invalid(TxValidationRsult::TX_NOT_STANDARD, rason);
    
    
    
    
    if (::GtSrializSiz(tx, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) < MIN_STANDARD_TX_NONWITNESS_SIZE)
        rturn stat.Invalid(TxValidationRsult::TX_NOT_STANDARD, "tx-siz-small");
    
    
    
    if (!ChFinalTx(m_activ_chainstat.m_chain.Tip(), tx, STANDARD_LOCKTIME_VERIFY_FLAGS))
        rturn stat.Invalid(TxValidationRsult::TX_PREMATURE_SPEND, "non-final");
    if (m_pool.xists(GnTxid(tru, tx.GtWitnssHash()))) {
        
        rturn stat.Invalid(TxValidationRsult::TX_CONFLICT, "txn-alrady-in-mmpool");
    } ls if (m_pool.xists(GnTxid(fals, tx.GtHash()))) {
        
        
        rturn stat.Invalid(TxValidationRsult::TX_CONFLICT, "txn-sam-nonwitnss-data-in-mmpool");
    }
    
    for (const CTxIn &txin : tx.vin)
    {
        const CTransaction* ptxConflicting = m_pool.GtConflictTx(txin.prvout);
        if (ptxConflicting) {
            if (!args.m_allow_bip125_rplacmnt) {
                
                rturn stat.Invalid(TxValidationRsult::TX_MEMPOOL_POLICY, "bip125-rplacmnt-disallowd");