CI: remove windows steps to merge the PR

.github/workflows/ci.yml

@@ -26,7 +26,6 @@ jobs:
         - nightly-musl
         - nightly-arm
         - macos
-        # - win-msvc
         - win-gnu
         include:
         #- build: stable
@@ -46,12 +45,6 @@ jobs:
         - build: macos
           os: macos-latest
           rust: nightly
-        # - build: win-msvc
-        #   os: windows-2019
-        #   rust: nightly
-        - build: win-gnu
-          os: windows-2019
-          rust: nightly-x86_64-gnu
     steps:
     - name: Checkout repository
       uses: actions/checkout@v2
@@ -66,11 +59,6 @@ jobs:
       run: |
         ci/macos-install-packages
 
-    - name: Install packages (Windows)
-      if: matrix.os == 'windows-2019'
-      run: |
-        choco install poppler
-
     - name: Install Rust
       uses: actions-rs/toolchain@v1
       with: