Remove invalid YAML keys

Author: djc

.github/workflows/ci.yml

@@ -14,7 +14,6 @@ jobs:
       uses: dtolnay/rust-toolchain@master
       with:
         toolchain: stable
-        override: true
     - run: echo "VCPKG_ROOT=$env:VCPKG_INSTALLATION_ROOT" | Out-File -FilePath $env:GITHUB_ENV -Append
     - run: vcpkg install openssl:x64-windows-static-md
     - name: Run cargo check --all
@@ -48,7 +47,6 @@ jobs:
       uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ matrix.toolchain }}
-        override: true
     - name: Run cargo check --all
       run: cargo check --all
     - name: Run the tests