remove windows CI workaround

.github/workflows/ci.yml

@@ -53,22 +53,6 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, macos-latest, ubuntu-latest]
-        include:
-          - os: windows-latest
-            shell: msys2 {0}
-            # GNU Windows is used as we need
-            # `unistd.h` and more in `cryptonight/`.
-            rust: stable-x86_64-pc-windows-gnu
-          - os: macos-latest
-            shell: bash
-            rust: stable
-          - os: ubuntu-latest
-            shell: bash
-            rust: stable
-
-    defaults:
-      run:
-        shell: ${{ matrix.shell }}
 
     steps:
     - name: Checkout
@@ -91,38 +75,6 @@ jobs:
     - name: Download monerod
       uses: ./.github/actions/monerod-download
 
-    # Packages other than `Boost` used by `Monero` are listed here.
-    # https://github.com/monero-project/monero/blob/c444a7e002036e834bfb4c68f04a121ce1af5825/.github/workflows/build.yml#L71
-
-    - name: Install dependencies (Linux)
-      if: matrix.os == 'ubuntu-latest'
-      run: sudo apt install -y libboost-dev
-
-    - name: Install dependencies (macOS)
-      if: matrix.os == 'macos-latest'
-      run: HOMEBREW_NO_AUTO_UPDATE=1 brew install boost
-
-    - name: Install dependencies (Windows)
-      if: matrix.os == 'windows-latest'
-      uses: msys2/setup-msys2@v2
-      with:
-        path-type: inherit
-        update: true
-        install: mingw-w64-x86_64-toolchain mingw-w64-x86_64-boost msys2-runtime-devel git mingw-w64-x86_64-cmake mingw-w64-x86_64-ninja
-
-    # HACK: 2024-05-14
-    # GCC 14+ fails to build `lmdb-master-sys` with no clear error message:
-    # <https://github.com/Cuprate/cuprate/pull/127>
-    #
-    # - MSYS2 repos carry older versions of packages
-    # - pacman lets us manually downgrade from package files
-    # - Note that `gcc` requires `gcc-libs`
-    - name: Downgrade to GCC 13.2 (Windows)
-      if: matrix.os == 'windows-latest'
-      run: |
-        wget https://repo.msys2.org/mingw/mingw64/mingw-w64-x86_64-gcc-13.2.0-6-any.pkg.tar.zst https://repo.msys2.org/mingw/mingw64/mingw-w64-x86_64-gcc-libs-13.2.0-6-any.pkg.tar.zst
-        pacman -U --noconfirm mingw-w64-x86_64-gcc-13.2.0-6-any.pkg.tar.zst mingw-w64-x86_64-gcc-libs-13.2.0-6-any.pkg.tar.zst
-
     - name: Documentation
       run: cargo doc --workspace --all-features --no-deps