Github action: More cleanups

.github/actions/cmake-windows/action.yml

@@ -16,4 +16,3 @@ runs:
               -DPROTOZERO_INCLUDE_DIR=${GITHUB_WORKSPACE}/../protozero/include
       shell: bash
       working-directory: build
-

.github/actions/install-protozero/action.yml

@@ -6,4 +6,3 @@ runs:
     - name: Install from git
       run: git clone --quiet --depth 1 https://github.com/mapbox/protozero.git ../protozero
       shell: bash
-

.github/actions/install-windows/action.yml

@@ -11,7 +11,5 @@ runs:
           bzip2:x64-windows \
           expat:x64-windows \
           lz4:x64-windows \
-          sparsehash:x64-windows \
           zlib:x64-windows
       shell: bash
-

.github/workflows/ci.yml

@@ -130,16 +130,11 @@ jobs:
             libgdal-dev \
             libgeos++-dev \
             liblz4-dev \
-            libsparsehash-dev \
             make \
             ruby \
             ruby-json \
             spatialite-bin \
             zlib1g-dev
-      - name: Install compiler
-        shell: bash
-        if: matrix.cpp_compiler == 'clang++-14'
-        run: apt-get install -yq clang-14
       - name: Prepare container (dnf)
         shell: bash
         if: startsWith(matrix.image, 'fedora:')
@@ -160,7 +155,6 @@ jobs:
             make \
             ruby \
             rubygem-json \
-            sparsehash-devel \
             spatialite-tools \
             zlib-devel
       - uses: actions/checkout@v4