chore(3p): Clean up unused third-party packages r/2328

Removes the following currently unused packages:

* terraform-gcp
* cpp.googleapis
* nixery

Change-Id: I02c38f0e6d23b1b9008706ca5a3b9db51cc9b689
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2650
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: glittershark <grfn@gws.fyi>

1 files changed, 0 insertions, 55 deletions

diff --git a/third_party/cpp/googleapis/CONTRIBUTING.md b/third_party/cpp/googleapis/CONTRIBUTING.md
deleted file mode 100644
index 33497a37985f..000000000000
--- a/third_party/cpp/googleapis/CONTRIBUTING.md
+++ /dev/null
@@ -1,55 +0,0 @@
-# How to become a contributor and submit your own code
-
-## Contributor License Agreements
-
-We'd love to accept your patches! Before we can take them, we
-have to jump a couple of legal hurdles.
-
-Please fill out either the individual or corporate Contributor License Agreement
-(CLA).
-
-  * If you are an individual writing original source code and you're sure you
-    own the intellectual property, then you'll need to sign an
-    [individual CLA](https://developers.google.com/open-source/cla/individual).
-  * If you work for a company that wants to allow you to contribute your work,
-    then you'll need to sign a
-    [corporate CLA](https://developers.google.com/open-source/cla/corporate).
-
-Follow either of the two links above to access the appropriate CLA and
-instructions for how to sign and return it. Once we receive it, we'll be able to
-accept your pull requests.
-
-## Contributing A Patch
-
-1. Submit an issue describing your proposed change to the repo in question.
-1. The repo owner will respond to your issue promptly.
-1. If your proposed change is accepted, and you haven't already done so, sign a
-   Contributor License Agreement (see details above).
-1. Fork the desired repo, develop and test your code changes.
-1. Ensure that your code adheres to the existing style in the sample to which
-   you are contributing.
-1. Ensure that your code has an appropriate set of unit tests which all pass.
-1. Submit a pull request.
-
-## Style
-
-This repository follow the [Google C++ Style Guide](
-https://google.github.io/styleguide/cppguide.html).
-Please make sure your contributions adhere to the style guide.
-
-### Formatting
-
-The code in this project is formatted with `clang-format(1)`, and our CI builds
-will check that the code matches the format generated by this tool before
-accepting a pull request. Please configure your editor or IDE to use the Google
-style for indentation and other whitespace. If you need to reformat one or more
-files, you can simply run `clang-format` manually:
-
-```console
-$ clang-format -i <file>....
-```
-
-If you need to reformat one of the files to match the Google style.  Please be
-advised that `clang-format` has been known to generate slightly different
-formatting in different versions. We use version 7; use the same version if you
-run into problems.