GHA/non-native: drop MS-DOS jobs, requires OpenSSL 1.0.2

Cherry-picked from #18330
Closes #18338

.github/workflows/non-native.yml

@@ -329,115 +329,3 @@ jobs:
           else
             make -C bld examples
           fi
-
-  msdos:
-    name: "MS-DOS, ${{ matrix.build == 'cmake' && 'CM' || 'AM' }} djgpp openssl i586"
-    runs-on: 'ubuntu-latest'
-    timeout-minutes: 5
-    env:
-      MAKEFLAGS: -j 5
-      MATRIX_BUILD: '${{ matrix.build }}'
-      TOOLCHAIN_VERSION: '3.4'
-    strategy:
-      matrix:
-        build: [autotools, cmake]
-      fail-fast: false
-    steps:
-      - name: 'install packages'
-        run: |
-          sudo rm -f /var/lib/man-db/auto-update
-          sudo apt-get -o Dpkg::Use-Pty=0 install libfl2
-
-      - name: 'cache compiler (djgpp)'
-        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4
-        id: cache-compiler
-        with:
-          path: ~/djgpp
-          key: ${{ runner.os }}-djgpp-${{ env.TOOLCHAIN_VERSION }}-amd64
-
-      - name: 'install compiler (djgpp)'
-        if: ${{ steps.cache-compiler.outputs.cache-hit != 'true' }}
-        run: |
-          cd ~
-          curl --disable --fail --silent --show-error --connect-timeout 15 --max-time 120 --retry 3 --retry-connrefused \
-            --location "https://github.com/andrewwutw/build-djgpp/releases/download/v${TOOLCHAIN_VERSION}/djgpp-linux64-gcc1220.tar.bz2" | tar -xj
-          cd djgpp
-          for f in wat3211b.zip zlb13b.zip ssl102ub.zip; do
-            curl --disable --fail --silent --show-error --connect-timeout 15 --max-time 60 --retry 3 --retry-connrefused \
-              "https://www.delorie.com/pub/djgpp/current/v2tk/$f" --output bin.zip
-            unzip -q bin.zip
-            rm -f bin.zip
-          done
-
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
-        with:
-          persist-credentials: false
-
-      - name: 'configure'
-        run: |
-          if [ "${MATRIX_BUILD}" = 'cmake' ]; then
-            cmake -B bld -G Ninja \
-              -DCMAKE_SYSTEM_NAME=DOS \
-              -DCMAKE_SYSTEM_PROCESSOR=x86 \
-              -DCMAKE_C_COMPILER_TARGET=i586-pc-msdosdjgpp \
-              -DCMAKE_C_COMPILER="$HOME/djgpp/bin/i586-pc-msdosdjgpp-gcc" \
-              -DCMAKE_UNITY_BUILD=ON \
-              -DCURL_WERROR=ON \
-              -DCURL_USE_LIBPSL=OFF \
-              -DOPENSSL_INCLUDE_DIR="$HOME/djgpp/include" \
-              -DOPENSSL_SSL_LIBRARY="$HOME/djgpp/lib/libssl.a" \
-              -DOPENSSL_CRYPTO_LIBRARY="$HOME/djgpp/lib/libcrypto.a" \
-              -DZLIB_INCLUDE_DIR="$HOME/djgpp/include" \
-              -DZLIB_LIBRARY="$HOME/djgpp/lib/libz.a" \
-              -DWATT_ROOT="$HOME/djgpp/net/watt"
-          else
-            autoreconf -fi
-            mkdir bld && cd bld && ../configure --disable-dependency-tracking --enable-unity --enable-warnings --enable-werror \
-              CC="$HOME/djgpp/bin/i586-pc-msdosdjgpp-gcc" \
-              AR="$HOME/djgpp/bin/i586-pc-msdosdjgpp-ar" \
-              RANLIB="$HOME/djgpp/bin/i586-pc-msdosdjgpp-ranlib" \
-              WATT_ROOT="$HOME/djgpp/net/watt" \
-              --host=i586-pc-msdosdjgpp \
-              --with-openssl="$HOME/djgpp" \
-              --with-zlib="$HOME/djgpp" \
-              --without-libpsl \
-              --disable-shared
-          fi
-
-      - name: 'configure log'
-        if: ${{ !cancelled() }}
-        run: cat bld/config.log bld/CMakeFiles/CMake*.yaml 2>/dev/null || true
-
-      - name: 'curl_config.h'
-        run: |
-          echo '::group::raw'; cat bld/lib/curl_config.h || true; echo '::endgroup::'
-          grep -F '#define' bld/lib/curl_config.h | sort || true
-
-      - name: 'build'
-        run: |
-          if [ "${MATRIX_BUILD}" = 'cmake' ]; then
-            cmake --build bld
-          else
-            make -C bld
-          fi
-
-      - name: 'curl info'
-        run: find . \( -name '*.exe' -o -name '*.a' \) -exec file '{}' \;
-
-      - name: 'build tests'
-        if: ${{ matrix.build == 'cmake' }}  # skip for autotools to save time
-        run: |
-          if [ "${MATRIX_BUILD}" = 'cmake' ]; then
-            cmake --build bld --target testdeps
-          else
-            make -C bld -C tests
-          fi
-
-      - name: 'build examples'
-        if: ${{ matrix.build == 'cmake' }}  # skip for autotools to save time
-        run: |
-          if [ "${MATRIX_BUILD}" = 'cmake' ]; then
-            cmake --build bld --target curl-examples-build
-          else
-            make -C bld examples
-          fi