[llvm] [CI] Make monolithic-* scripts only run Github steps on Github (PR #152197)

[via llvm-commits]

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@@ -71,10 +85,7 @@ cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
       -D CMAKE_MODULE_LINKER_FLAGS="/MANIFEST:NO" \
       -D CMAKE_SHARED_LINKER_FLAGS="/MANIFEST:NO"
 
-echo "::endgroup::"
-echo "::group::ninja"
+start-group "ninja"
 
 # Targets are not escaped as they are passed as separate arguments.
 ninja -C "${BUILD_DIR}" -k 0 ${targets}
-
-echo "::endgroup"
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cmtice wrote:

Again, don't we still need this last one?

https://github.com/llvm/llvm-project/pull/152197