chore: remove references to conda (#830)

Author: tswast

noxfile.py

@@ -552,8 +552,6 @@ def prerelease(session: nox.sessions.Session, tests_path):
     already_installed.add("pyarrow")
 
     session.install(
-        "--extra-index-url",
-        "https://pypi.anaconda.org/scipy-wheels-nightly/simple",
         "--prefer-binary",
         "--pre",
         "--upgrade",

third_party/bigframes_vendored/ibis/README.md

@@ -1,7 +1,6 @@
 # Ibis
 
 [![Documentation Status](https://img.shields.io/badge/docs-docs.ibis--project.org-blue.svg)](http://ibis-project.org)
-[![Anaconda-Server Badge](https://anaconda.org/conda-forge/ibis-framework/badges/version.svg)](https://anaconda.org/conda-forge/ibis-framework)
 [![PyPI](https://img.shields.io/pypi/v/ibis-framework.svg)](https://pypi.org/project/ibis-framework)
 [![Build status](https://github.com/ibis-project/ibis/actions/workflows/ibis-main.yml/badge.svg)](https://github.com/ibis-project/ibis/actions/workflows/ibis-main.yml?query=branch%3Amaster)
 [![Build status](https://github.com/ibis-project/ibis/actions/workflows/ibis-backends.yml/badge.svg)](https://github.com/ibis-project/ibis/actions/workflows/ibis-backends.yml?query=branch%3Amaster)
@@ -83,28 +82,14 @@ Install Ibis from PyPI with:
 pip install 'ibis-framework[duckdb]'
 ```
 
-Or from conda-forge with:
-
-```bash
-conda install ibis-framework -c conda-forge
-```
-
 (It’s a common mistake to `pip install ibis`. If you try to use Ibis and get errors early on try uninstalling `ibis` and installing `ibis-framework`)
 
-To discover ibis, we suggest starting with the DuckDB backend (which is included by default in the conda-forge package). The DuckDB backend is performant and fully featured.
-
 To use ibis with other backends, include the backend name in brackets for PyPI:
 
 ```bash
 pip install 'ibis-framework[postgres]'
 ```
 
-Or use `ibis-$BACKEND` where `$BACKEND` is the specific backend you want to use when installing from conda-forge:
-
-```bash
-conda install ibis-postgres -c conda-forge
-```
-
 ## Getting Started with Ibis
 
 We provide a number of tutorial and example notebooks in the

third_party/bigframes_vendored/pandas/README.md

@@ -6,7 +6,6 @@
 
 # pandas: powerful Python data analysis toolkit
 [![PyPI Latest Release](https://img.shields.io/pypi/v/pandas.svg)](https://pypi.org/project/pandas/)
-[![Conda Latest Release](https://anaconda.org/conda-forge/pandas/badges/version.svg)](https://anaconda.org/anaconda/pandas/)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.3509134.svg)](https://doi.org/10.5281/zenodo.3509134)
 [![Package Status](https://img.shields.io/pypi/status/pandas.svg)](https://pypi.org/project/pandas/)
 [![License](https://img.shields.io/pypi/l/pandas.svg)](https://github.com/pandas-dev/pandas/blob/main/LICENSE)
@@ -86,15 +85,10 @@ The source code is currently hosted on GitHub at:
 https://github.com/pandas-dev/pandas
 
 Binary installers for the latest released version are available at the [Python
-Package Index (PyPI)](https://pypi.org/project/pandas) and on [Conda](https://docs.conda.io/en/latest/).
+Package Index (PyPI)](https://pypi.org/project/pandas).
 
 ```sh
-# conda
-conda install -c conda-forge pandas
-```
-
-```sh
-# or PyPI
+# PyPI
 pip install pandas
 ```