[REVERT ME] Drop most CI while experimenting

Author: hartwork

.github/workflows/enforce-copies-of-help-output-in-sync.yml

@@ -14,28 +14,12 @@ jobs:
       fail-fast: false
       matrix:
         include:
-        # Linux
-          - cc: gcc-14
-            cxx: g++-14
-            clang_major_version: null
-            clang_repo_suffix: null
-            runs-on: ubuntu-24.04
-          - cc: clang-18
-            cxx: clang++-18
-            clang_major_version: 18
-            clang_repo_suffix: -18
-            runs-on: ubuntu-22.04
         # macOS
           - cc: gcc-13
             cxx: g++-13
             clang_major_version: null
             clang_repo_suffix: null
             runs-on: macos-13
-          - cc: clang
-            cxx: clang++
-            clang_major_version: null
-            clang_repo_suffix: null
-            runs-on: macos-13
     steps:
       - name: Add Clang/LLVM repositories (Linux)
         if: "${{ runner.os == 'Linux' && contains(matrix.cxx, 'clang') }}"