ci: drop orphan upstream workflow — incompatible with our runner labels (#299)

.github/workflows/validate.yml

@@ -1,70 +0,0 @@
-# Based on https://github.com/actions-rs/meta/blob/master/recipes/quickstart.md
-
-on:
-  push: { }
-
-name: Validate
-
-jobs:
-  check:
-    name: Check
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ windows-latest, ubuntu-latest, macOS-latest ]
-        rust: [ stable ]
-
-    runs-on: ${{ matrix.os }}
-
-    steps:
-      - name: Checkout sources
-        uses: actions/checkout@v2
-
-      - name: Install stable toolchain
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          toolchain: ${{ matrix.rust }}
-
-      - name: Run cargo check
-        run: cargo check
-
-  test:
-    name: Test Suite
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ windows-latest, ubuntu-latest, macOS-latest ]
-        rust: [ stable ]
-
-    runs-on: ${{ matrix.os }}
-
-    steps:
-      - name: Checkout sources
-        uses: actions/checkout@v2
-
-      - name: Install stable toolchain
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          toolchain: stable
-
-      - name: Run cargo test
-        run: cargo test --release
-
-  lints:
-    name: Lints
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout sources
-        uses: actions/checkout@v2
-
-      - name: Install stable toolchain
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          toolchain: stable
-          components: rustfmt, clippy
-
-      - name: Run cargo fmt
-        run: cargo fmt --all -- --check
-
-      - name: Run cargo clippy
-        run: cargo clippy -- -D warnings