Remove GitHub Actions compile workflow (CI used local DFTE symlink).

.github/workflows/compile.yml

@@ -1,28 +0,0 @@
-name: Compile
-
-on:
-  push:
-  pull_request:
-
-jobs:
-  pio-compile:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        environment: [esp8266, esp32]
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
-
-      - name: Install PlatformIO
-        run: pip install platformio
-
-      - name: Compile tests for ${{ matrix.environment }}
-        run: pio test -e ${{ matrix.environment }} --without-uploading --without-testing