chore(builds): remove github-release tool

This now lives in the jimeh/emacs-builds repo, which focuses on building
and publishing binary releases, using the build-emacs-for-macos script.

.github/workflows/build-and-release.yml

@@ -1,56 +0,0 @@
----
-name: Build and Release
-on:
-  workflow_dispatch:
-    inputs:
-      gitRef:
-        description: "Git Ref"
-        required: true
-        default: "master"
-      prerelease:
-        Description: "Pre-release?"
-        required: true
-        default: "true"
-
-jobs:
-  build-and-release:
-    runs-on: macos-10.15
-    steps:
-      - uses: actions/checkout@v2
-      - uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 2.7
-      - uses: actions/setup-go@v2
-        with:
-          go-version: 1.16
-      - name: Generate plan.yml
-        run: >-
-          go run ./cmd/github-release --plan plan.yml plan
-          ${{ github.event.inputs.gitRef }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Show plan
-        run: >-
-          cat plan.yml
-      - name: Check if release and asset already exist for given plan
-        id: check
-        continue-on-error: true
-        run: >-
-          go run ./cmd/github-release --plan plan.yml check
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Install dependencies
-        if: steps.check.outcome == 'failure'
-        run: >-
-          brew bundle
-      - name: Download and build Emacs
-        if: steps.check.outcome == 'failure'
-        run: >-
-          ./build-emacs-for-macos --plan-file=plan.yml --native-full-aot
-      - name: Publish release
-        if: steps.check.outcome == 'failure'
-        run: >-
-          go run ./cmd/github-release --plan plan.yml publish
-          --prerelease=${{ github.event.inputs.prerelease }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}