chore(nixery): Housekeeping for depot compatibility r/3982

Cleans up a whole bunch of things I wanted to get out of the door
right away:

* depot internal references to //third_party/nixery have been replaced
  with //tools/nixery
* cleaned up files from Github
* fixed SPDX & Copyright headers
* code formatting and inclusion in //tools/depotfmt checks

Change-Id: Iea79f0fdf3aa04f71741d4f4032f88605ae415bb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5486
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 0 insertions, 27 deletions

diff --git a/tools/nixery/.github/workflows/build-and-test.yaml b/tools/nixery/.github/workflows/build-and-test.yaml
deleted file mode 100644
index d3f258ffaac4..000000000000
--- a/tools/nixery/.github/workflows/build-and-test.yaml
+++ /dev/null
@@ -1,27 +0,0 @@
-# Build Nixery, spin up an instance and pull an image from it.
-name: "Build and test Nixery"
-on:
-  push:
-    branches:
-      - master
-  pull_request: {}
-env:
-  NIX_PATH: "nixpkgs=https://github.com/NixOS/nixpkgs/archive/4263ba5e133cc3fc699c1152ab5ee46ef668e675.tar.gz"
-jobs:
-  build-and-test:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Install Nix
-        uses: cachix/install-nix-action@v13
-      - name: Checkout
-        uses: actions/checkout@v2.3.4
-      - name: Prepare environment
-        run: nix-env -f '<nixpkgs>' -iA go
-      - name: Check formatting
-        run: "test -z $(gofmt -l .)"
-      - name: Run `go vet`
-        run: "go vet ./..."
-      - name: Build Nixery
-        run: "nix-build --no-out-link"
-      - name: Run integration test
-        run: scripts/integration-test.sh