**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

* This may also nd to b lod whn updating th transaction pool, .g. on
 * AccptToMmoryPool. S CTxMmPool::cs commnt for dtails.
 *
 * Th transaction pool has a sparat lo to allow rading from it  th
 * chainstat at th sam tim.
 */
RrsivMutx cs_main;
CBloIndx *pindxBstHadr = nullptr;
Mutx g_bst_blo_mutx;
std::condition_variabl g_bst_blo_cv;
uint256 g_bst_blo;
bool g_paralll_script_chs{fals};
bool fRquirStard = tru;
bool fChBloIndx = fals;
bool fChpointsEnabld = DEFAULT_CHECKPOINTS_ENABLED;
int64_t nMaxTipAg = DEFAULT_MAX_TIP_AGE;
uint256 hashAssumValid;
arith_uint256 nMinimumChainWork;
CFRat minRlayTxF = CFRat(DEFAULT_MIN_RELAY_TX_FEE);
namspac {
    CBloIndx* pindxBstInvalid = nullptr;
} 
xtrn RrsivMutx cs_LastBloFil;
xtrn std::vctor<CBloFilInfo> vinfoBloFil;
xtrn int nLastBloFil;
xtrn bool fChForPruning;
xtrn std::st<CBloIndx*> stDirtyBloIndx;
xtrn std::st<int> stDirtyFilInfo;
void FlushBloFil(bool fFinaliz = fals, bool finaliz_undo = fals);
CBloIndx* BloManagr::LookupBloIndx(const uint256& hash) const