CLN: remove deprecated irow, icol, iget, iget_value (GH10711)
xref https://github.com/pandas-dev/pandas/issues/6581
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/15547?src=pr&el=h1) Report
> Merging [#15547](https://codecov.io/gh/pandas-dev/pandas/pull/15547?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/3f91d5a764f019f017fd7f0268d75fd6001b208f?src=pr&el=desc) will **decrease** coverage by `-0.03%`.
> The diff coverage is `n/a`.


```diff
@@            Coverage Diff             @@
##           master   #15547      +/-   ##
==========================================
- Coverage   91.06%   91.03%   -0.03%     
==========================================
  Files         136      136              
  Lines       49104    49083      -21     
==========================================
- Hits        44718    44685      -33     
- Misses       4386     4398      +12
```


| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/15547?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/frame.py](https://codecov.io/gh/pandas-dev/pandas/compare/3f91d5a764f019f017fd7f0268d75fd6001b208f...06ea1bb4585073ee0fd0260320966dd1efb66847?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZnJhbWUucHk=) | `97.73% <ø> (-0.11%)` | :x: |
| [pandas/core/series.py](https://codecov.io/gh/pandas-dev/pandas/compare/3f91d5a764f019f017fd7f0268d75fd6001b208f...06ea1bb4585073ee0fd0260320966dd1efb66847?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvc2VyaWVzLnB5) | `94.89% <ø> (-0.05%)` | :x: |
| [pandas/core/groupby.py](https://codecov.io/gh/pandas-dev/pandas/compare/3f91d5a764f019f017fd7f0268d75fd6001b208f...06ea1bb4585073ee0fd0260320966dd1efb66847?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZ3JvdXBieS5weQ==) | `94.99% <ø> (-0.01%)` | :x: |
| [pandas/io/gbq.py](https://codecov.io/gh/pandas-dev/pandas/compare/3f91d5a764f019f017fd7f0268d75fd6001b208f...06ea1bb4585073ee0fd0260320966dd1efb66847?src=pr&el=tree#diff-cGFuZGFzL2lvL2dicS5weQ==) | `40% <0%> (-46.67%)` | :x: |
| [pandas/util/decorators.py](https://codecov.io/gh/pandas-dev/pandas/compare/3f91d5a764f019f017fd7f0268d75fd6001b208f...06ea1bb4585073ee0fd0260320966dd1efb66847?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvZGVjb3JhdG9ycy5weQ==) | `67.92% <0%> (-0.95%)` | :x: |
| [pandas/tools/merge.py](https://codecov.io/gh/pandas-dev/pandas/compare/3f91d5a764f019f017fd7f0268d75fd6001b208f...06ea1bb4585073ee0fd0260320966dd1efb66847?src=pr&el=tree#diff-cGFuZGFzL3Rvb2xzL21lcmdlLnB5) | `91.78% <0%> (-0.35%)` | :x: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/15547?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/15547?src=pr&el=footer). Last update [3f91d5a...06ea1bb](https://codecov.io/gh/pandas-dev/pandas/compare/3f91d5a764f019f017fd7f0268d75fd6001b208f...06ea1bb4585073ee0fd0260320966dd1efb66847?el=footer&src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).