Remove Deprecated Azure CI Step
Found this while investigating #26345 may or may not be related but figured worth a separate PR in either case
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=h1) Report
> Merging [#26384](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/304d8d4bc3b3cde7e2b463426bf484701df142cd?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/26384/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #26384      +/-   ##
==========================================
- Coverage   91.68%   91.67%   -0.01%     
==========================================
  Files         174      174              
  Lines       50704    50704              
==========================================
- Hits        46488    46484       -4     
- Misses       4216     4220       +4
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.18% <ø> (ø)` | :arrow_up: |
| #single | `41.18% <ø> (-0.15%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/io/gbq.py](https://codecov.io/gh/pandas-dev/pandas/pull/26384/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL2dicS5weQ==) | `78.94% <0%> (-10.53%)` | :arrow_down: |
| [pandas/core/frame.py](https://codecov.io/gh/pandas-dev/pandas/pull/26384/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZnJhbWUucHk=) | `97.01% <0%> (-0.12%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26384?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/26384?src=pr&el=footer). Last update [304d8d4...870c3a5](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=h1) Report
> Merging [#26384](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/e5d15b20e828c66182a4e175dd5a5b9b951d9950?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/26384/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #26384      +/-   ##
==========================================
- Coverage   91.69%   91.68%   -0.01%     
==========================================
  Files         174      174              
  Lines       50749    50743       -6     
==========================================
- Hits        46534    46524      -10     
- Misses       4215     4219       +4
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.19% <ø> (-0.01%)` | :arrow_down: |
| #single | `41.19% <ø> (-0.13%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/io/gbq.py](https://codecov.io/gh/pandas-dev/pandas/pull/26384/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL2dicS5weQ==) | `78.94% <0%> (-10.53%)` | :arrow_down: |
| [pandas/core/frame.py](https://codecov.io/gh/pandas-dev/pandas/pull/26384/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZnJhbWUucHk=) | `97.02% <0%> (-0.12%)` | :arrow_down: |
| [pandas/core/groupby/generic.py](https://codecov.io/gh/pandas-dev/pandas/pull/26384/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZ3JvdXBieS9nZW5lcmljLnB5) | `88.93% <0%> (-0.08%)` | :arrow_down: |
| [pandas/core/groupby/groupby.py](https://codecov.io/gh/pandas-dev/pandas/pull/26384/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZ3JvdXBieS9ncm91cGJ5LnB5) | `97.23% <0%> (-0.01%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26384?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/26384?src=pr&el=footer). Last update [e5d15b2...9757973](https://codecov.io/gh/pandas-dev/pandas/pull/26384?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 @WillAyd looks like this step is required to install conda, right? @datapythonista not entirely sure. The build logs show this task and deprecated and it appears to be documented as such on the Azure side:

https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/package/conda-environment?view=azure-devops#yaml-snippet

I think the preference is to use a task that just exposes conda via the system path:

https://docs.microsoft.com/en-us/azure/devops/pipelines/languages/anaconda?view=azure-devops&tabs=ubuntu-16-04#add-conda-to-your-system-path That sounds good to me. I saw that the CI was failing because of deleting the step, but if we can just set an environment variable that sounds better. FWIW here's the issue on the Azure side of things:

https://github.com/microsoft/azure-pipelines-tasks/pull/9573
 thanks @WillAyd 