stopped numeric_only=True from dropping columns
- [ ] [Tests added and passed] Issue #46375 
Hello @hhheidi! Thanks for opening this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:



* In the file [`pandas/tests/groupby/test_groupby.py`](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py):

> [Line 2701:89](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2701): [E501](https://duckduckgo.com/?q=pep8%20E501) line too long (91 > 88 characters)
> [Line 2729:89](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2729): [E501](https://duckduckgo.com/?q=pep8%20E501) line too long (91 > 88 characters)
> [Line 2731:14](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2731): [E201](https://duckduckgo.com/?q=pep8%20E201) whitespace after '{'
> [Line 2731:74](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2731): [E231](https://duckduckgo.com/?q=pep8%20E231) missing whitespace after ','
> [Line 2734:51](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2734): [E231](https://duckduckgo.com/?q=pep8%20E231) missing whitespace after ','
> [Line 2737:14](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2737): [E201](https://duckduckgo.com/?q=pep8%20E201) whitespace after '{'
> [Line 2737:74](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2737): [E231](https://duckduckgo.com/?q=pep8%20E231) missing whitespace after ','
> [Line 2740:51](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2740): [E231](https://duckduckgo.com/?q=pep8%20E231) missing whitespace after ','
> [Line 2743:14](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2743): [E201](https://duckduckgo.com/?q=pep8%20E201) whitespace after '{'
> [Line 2743:74](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2743): [E231](https://duckduckgo.com/?q=pep8%20E231) missing whitespace after ','
> [Line 2746:51](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2746): [E231](https://duckduckgo.com/?q=pep8%20E231) missing whitespace after ','
> [Line 2750:89](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2750): [E501](https://duckduckgo.com/?q=pep8%20E501) line too long (92 > 88 characters)
> [Line 2755:44](https://github.com/pandas-dev/pandas/blob/2fa264bac0cc2c80d6f85c08953f0a4458817586/pandas/tests/groupby/test_groupby.py#L2755): [W291](https://duckduckgo.com/?q=pep8%20W291) trailing whitespace

 Ouch, I just reran all the tests. Not sure if I have the expertise to fix the issue as-is, so could I update the PR with just the tests? Is that a thing? This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this. Thanks for the pull request, but it appears to be stale and is failing a lot of the CI checks. If interested in continuing, please fix the formatting and tests failures locally and we can reopen.