PERF: performance improvement in MultiIndex.sortlevel
```
-------------------------------------------------------------------------------
Test name                                    | head[ms] | base[ms] |  ratio   |
-------------------------------------------------------------------------------
multiindex_sortlevel_int64                   | 664.1977 | 2443.2590 |   0.2718 |
-------------------------------------------------------------------------------
Test name                                    | head[ms] | base[ms] |  ratio   |
-------------------------------------------------------------------------------

Ratio < 1.0 means the target commit is faster then the baseline.
Seed used: 1234

Target [dd31bae] : performance improvement in MultiIndex.sortlevel
Base   [c4a996a] : Merge pull request #9411 from dashesy/add_sql_test

test sql table name
```

looks good otherwise, ping when green after that change.
 @behzadnouri thanks!
