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, 68 deletions

diff --git a/third_party/cpp/googleapis/README.md b/third_party/cpp/googleapis/README.md
deleted file mode 100644
index 5c2a71193808..000000000000
--- a/third_party/cpp/googleapis/README.md
+++ /dev/null
@@ -1,68 +0,0 @@
-# Google Cloud Platform C++ Proto Libraries
-
-Compile the protocol buffer definitions into C++ libraries.
-
-## Requirements
-
-#### Compiler
-
-The Google Cloud C++ libraries are tested with the following compilers:
-
-| Compiler    | Minimum Version |
-| ----------- | --------------- |
-| GCC         | 4.8 |
-| Clang       | 3.8 |
-| MSVC++      | 14.1 |
-| Apple Clang | 8.1 |
-
-#### Build Tools
-
-The Google Cloud C++ Client Libraries can be built with
-[CMake](https://cmake.org) or [Bazel](https://bazel.io).  The minimal versions
-of these tools we test with are:
-
-| Tool       | Minimum Version |
-| ---------- | --------------- |
-| CMake      | 3.5 |
-| Bazel      | 0.24.0 |
-
-#### Libraries
-
-The libraries also depend on gRPC, libcurl, and the dependencies of those
-libraries. The Google Cloud C++ Client libraries are tested with the following
-versions of these dependencies:
-
-| Library | Minimum version |
-| ------- | --------------- |
-| gRPC    | v1.16.x |
-| libcurl | 7.47.0  |
-
-
-## Versioning
-
-Please note that the Google Cloud C++ client libraries do **not** follow
-[Semantic Versioning](http://semver.org/).
-
-**GA**: Libraries defined at a GA quality level are expected to be stable and
-any backwards-incompatible changes will be noted in the documentation. Major
-changes to the API will signaled by changing major version number
-(e.g. 1.x.y -> 2.0.0).
-
-**Beta**: Libraries defined at a Beta quality level are expected to be mostly
-stable and we're working towards their release candidate. We will address issues
-and requests with a higher priority.
-
-**Alpha**: Libraries defined at an Alpha quality level are still a
-work-in-progress and are more likely to get backwards-incompatible updates.
-Additionally, it's possible for Alpha libraries to get deprecated and deleted
-before ever being promoted to Beta or GA.
-
-## Contributing changes
-
-See [`CONTRIBUTING.md`](CONTRIBUTING.md) for details on how to contribute to
-this project, including how to build and test your changes as well as how to
-properly format your code.
-
-## Licensing
-
-Apache 2.0; see [`LICENSE`](LICENSE) for details.