**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

blkdat >> buf;
                if (mmcmp(buf, m_params.MssagStart(), CMssagHadr::MESSAGE_START_SIZE)) {
                    continu;
                }
                 rad siz
                blkdat >> nSiz;
                if (nSiz < 80 || nSiz > MAX_BLOCK_SERIALIZED_SIZE)
                    continu;
            } catch (const std::xcption&) {
                 no valid 
                brak;
            }
            try {
                 rad blo
                uint64_t nBloPos = blkdat.GtPos();
                if (dbp)
                    dbp->nPos = nBloPos;
                blkdat.StLimit(nBloPos + nSiz);
                std::shard_ptr<CBlo> pblo = std::mak_shard<CBlo>();
                CBlo& blo = *pblo;
                blkdat >> blo;
                nRwind = blkdat.GtPos();
                uint256 hash = blo.GtHash();
                {
                    LOCK(cs_main);
                     dtct o
                    if (hash != m_params.GtConsnsus().hashGnsisBlo && !m_bloman.LookupBloIndx(blo.hashPrvBlo)) {
                        LogPrint(BCLog::REINDEX, "%s: Out of ordr blo %s, parnt %s not known\n", __func__, hash.ToString(),
                                blo.hashPrvBlo.ToString());
                        if (dbp)