DOC: remove wakari.io section
 - [x] closes #15595
 - [ ] tests added / passed
 - [ ] passes ``git diff upstream/master | flake8 --diff``
 - [ ] whatsnew entry

thanks! @jreback Thanks for all of your work on pandas!! hahha @mandel01 thanks!

lots more coming soon! # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/15596?src=pr&el=h1) Report
> Merging [#15596](https://codecov.io/gh/pandas-dev/pandas/pull/15596?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/0bf45320440e0d477f6b31ac8825f34e8212f152?src=pr&el=desc) will **decrease** coverage by `-0.03%`.
> The diff coverage is `n/a`.


```diff
@@            Coverage Diff             @@
##           master   #15596      +/-   ##
==========================================
- Coverage   91.06%   91.03%   -0.03%     
==========================================
  Files         137      137              
  Lines       49307    49307              
==========================================
- Hits        44900    44889      -11     
- Misses       4407     4418      +11
```


| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/15596?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/io/gbq.py](https://codecov.io/gh/pandas-dev/pandas/compare/0bf45320440e0d477f6b31ac8825f34e8212f152...4aded31fe71cf87a63548f269d0f1f0cb973cc67?src=pr&el=tree#diff-cGFuZGFzL2lvL2dicS5weQ==) | `25% <0%> (-58.34%)` | :x: |
| [pandas/tools/merge.py](https://codecov.io/gh/pandas-dev/pandas/compare/0bf45320440e0d477f6b31ac8825f34e8212f152...4aded31fe71cf87a63548f269d0f1f0cb973cc67?src=pr&el=tree#diff-cGFuZGFzL3Rvb2xzL21lcmdlLnB5) | `91.78% <0%> (-0.35%)` | :x: |
| [pandas/core/frame.py](https://codecov.io/gh/pandas-dev/pandas/compare/0bf45320440e0d477f6b31ac8825f34e8212f152...4aded31fe71cf87a63548f269d0f1f0cb973cc67?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZnJhbWUucHk=) | `97.83% <0%> (-0.1%)` | :x: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/15596?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/15596?src=pr&el=footer). Last update [0bf4532...4aded31](https://codecov.io/gh/pandas-dev/pandas/compare/0bf45320440e0d477f6b31ac8825f34e8212f152...4aded31fe71cf87a63548f269d0f1f0cb973cc67?el=footer&src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).