test.yml: Do not download GoogleTest (#520)

f79c017 changed CMakeLists.txt to use FetchContent to download
GoogleTest.

Author: jmr

.github/workflows/test.yml

@@ -13,9 +13,6 @@ concurrency:
 
 permissions: read-all
 
-env:
-  GOOGLETEST_VERSION: "1.15.2"
-
 jobs:
   ctest:
     strategy:
@@ -39,21 +36,13 @@ jobs:
         with:
           cmake-build-args: "-DCMAKE_CXX_STANDARD=17 -DABSL_PROPAGATE_CXX_STD=ON -DABSL_ENABLE_INSTALL=ON -DBUILD_TESTING=off -DCMAKE_POSITION_INDEPENDENT_CODE=ON"
           abseil-version: "20250814.1"
-      - name: retrieve googletest v${{ env.GOOGLETEST_VERSION }}
-        run: |
-          wget https://github.com/google/googletest/releases/download/v${{ env.GOOGLETEST_VERSION }}/googletest-${{ env.GOOGLETEST_VERSION }}.tar.gz
-          tar -xzvf googletest-${{ env.GOOGLETEST_VERSION }}.tar.gz
-          echo GOOGLETEST_ROOT=${{ runner.temp }}/googletest-${{ env.GOOGLETEST_VERSION }} >> $GITHUB_ENV
-        working-directory: ${{ runner.temp }}
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       - run: mkdir build
       - run: >
           cmake
           -DWITH_PYTHON=yes
           -DCMAKE_CXX_STANDARD=17
           -DCMAKE_PREFIX_PATH=/usr/local/
-          -DGOOGLETEST_ROOT=${{ env.GOOGLETEST_ROOT }}
-          -DGOOGLETEST_VERSION=${{ env.GOOGLETEST_VERSION }}
           ..
         working-directory: build/
       - run: cmake --build . --parallel 45