Remove GitHub CD

This is being removed because it doesn't work, and fixing it is not a
current priority.

.github/workflows/cd.yml

@@ -1,77 +0,0 @@
-name: CD
-
-on:
-  push:
-    branches: ["master"]
-
-  workflow_dispatch:
-
-jobs:
-  validate:
-    runs-on: ubuntu-latest
-
-    steps:
-      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v3
-
-      - uses: actions/setup-go@v3
-        with:
-          go-version: "^1.19.1"
-
-      - run: go version
-
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@v3
-        with:
-          args: --timeout=5m
-
-      - name: go vet
-        run: go vet ./...
-
-      - name: test
-        run: go test ./...
-
-  release:
-    needs: validate
-    runs-on: ubuntu-latest
-    outputs:
-      version: ${{ steps.semrel.outputs.version }}
-
-    steps:
-      - name: go-semantic-release
-        id: semrel
-        uses: go-semantic-release/action@v1.17.0
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-
-  build:
-    needs: release
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        goos:
-          - "darwin"
-          - "linux"
-          - "windows"
-        goarch:
-          - "amd64"
-          - "arm64"
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - uses: actions/setup-go@v3
-        with:
-          go-version: "^1.19.1"
-
-      - name: build
-        run: GOOS=${{ matrix.goos }} GOARCH=${{ matrix.goarch }} go build -o ./build/${{ matrix.goos }}-${{ matrix.goarch }}
-
-      - name: Upload binaries to release
-        uses: svenstaro/upload-release-action@v2
-        with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: ./build/${{ matrix.goos }}-${{ matrix.goarch }}
-          asset_name: ${{ matrix.goos }}-${{ matrix.goarch }}
-          tag: ${{ github.ref }}
-