CLN: Removed colSpace parameter
Title is self-explanatory.  Seems like it was already done in `DataFrame.to_string()` some time ago.

## [Current coverage](https://codecov.io/gh/pydata/pandas/pull/13857?src=pr) is 85.25% (diff: 100%)

> Merging [#13857](https://codecov.io/gh/pydata/pandas/pull/13857?src=pr) into [master](https://codecov.io/gh/pydata/pandas/branch/master?src=pr) will not change coverage

``` diff
@@             master     #13857   diff @@
==========================================
  Files           140        140          
  Lines         50455      50455          
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
==========================================
  Hits          43014      43014          
  Misses         7441       7441          
  Partials          0          0          
```

> Powered by [Codecov](https://codecov.io?src=pr). Last update [59f2557...20de50d](https://codecov.io/gh/pydata/pandas/compare/59f25575f42e19f066dc3cd2245983071e2d7813...20de50d230c6ec1ed99c182a9260cf024a20e13c?src=pr)
 amazing we don't have tests to remove :<
