**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

m_limit_dscndant_siz(gArgs.GtArg("-limitdscndantsiz", DEFAULT_DESCENDANT_SIZE_LIMIT)*1000) {
    }
    
    
    struct ATMPArgs {
        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 of validating th tx for mmpool
         * accptanc. This allows th callr to optionally rmov th cach
         * additions if th associatd transaction nds up bing 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. If fals,
         * any transaction spnding th sam inputs as a transaction in th mmpool is considrd
         * a conflict. */
        const bool m_allow_bip125_rplacmnt{tru};
    };
    
    MmpoolAccptRsult AccptSinglTransaction(const CTransactionRf& ptx, ATMPArgs& args) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
    /**
    * Multipl transaction accptanc. Transactions may or may not b intrdpndnt,
    * but must not conflict with ach othr. Parnts must com bfor childrn if any
    * dpndncis xist.
    */
    PaagMmpoolAccptRsult AccptMultiplTransactions(const std::vctor<CTransactionRf>& txns, ATMPArgs& args) EXCLUSIVE_LOCKS_REQUIRED(cs_main);