Update Contributing docs

* Rephrase the CI section to be less likely to get out of sync
* Drop the snakefmt section since we are not currently using it. The
  snakefmt may be added back in the future.

Co-authored-by: Jover Lee <[email protected]>

CONTRIBUTING.md

@@ -2,49 +2,6 @@
 
 ## CI
 
-Checks are automatically run on certain pushed commits for testing and linting
-purposes. Some are defined by [.github/workflows/ci.yaml][] while others are
-configured outside of this repository.
+Tests are run through GitHub Actions when triggered by events as defined by [.github/workflows/ci.yaml][]
 
 [.github/workflows/ci.yaml]: ./.github/workflows/ci.yaml
-
-## Pre-commit
-
-[pre-commit][] is used for various checks (see [configuration][]).
-
-You can either [install it yourself][] to catch issues before pushing or look
-for the [pre-commit.ci run][] after pushing.
-
-[pre-commit]: https://pre-commit.com/
-[configuration]: ./.pre-commit-config.yaml
-[install it yourself]: https://pre-commit.com/#install
-[pre-commit.ci run]: https://results.pre-commit.ci/repo/github/493877605
-
-## Snakemake formatting
-
-We use [`snakefmt`](https://github.com/snakemake/snakefmt) to ensure consistency in style across Snakemake files in this project.
-
-### Installing
-
-- Using mamba/bioconda:
-
-```bash
-mamba install -c bioconda snakefmt
-```
-
-- Using pip:
-
-```bash
-pip install snakefmt
-```
-
-### IDE-independent
-
-1. Check for styling issues with `snakefmt --check .`
-1. Automatically fix styling issues with `snakefmt .`
-
-### Using VSCode extension
-
-1. Install the [VSCode extension](https://marketplace.visualstudio.com/items?itemName=tfehlmann.snakefmt)
-1. Check for styling issues with `Ctrl+Shift+P` and select `snakefmt: Check`
-1. Automatically fix styling issues with `Ctrl+Shift+P` and select `Format document`