Removing The Show_Source Button from API pages
- [x] closes #48715 

Made the required changes in the conf.py file.
It removes the show_source button from the API pages.


You need to create a pandas development environment with mamba, then run the `make.py` script in docs, start an http server with `python -m http.server` inside the `build` directory, and then you navigate the docs in your local instance of the docs.

Full documentation on this and more is here: https://pandas.pydata.org/docs/development/index.html 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 have gone stale. If interested in continuing, please merge in the main branch, address any review comments and/or failing tests, and we can reopen.