[llvm] [libcxx] [ci] Stop manually installing ninja in the Windows build jobs (PR #161907)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-github-workflow

Author: Martin Storsjö (mstorsjo)

<details>
<summary>Changes</summary>

Ninja is officially included among the preinstalled tools on the Windows runners now.

This should reduce the risk for stray failures here; sometimes, attempting to install Ninja through Chocolatey have caused spurious failures.

---
Full diff: https://github.com/llvm/llvm-project/pull/161907.diff


1 Files Affected:

- (modified) .github/workflows/libcxx-build-and-test.yaml (-1) 


``````````diff
diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index 77f79a85a0a2f..b78f2c69408e7 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -255,7 +255,6 @@ jobs:
       - uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Install dependencies
         run: |
-          choco install -y ninja
           pip install psutil
       - name: Install a current LLVM
         if: ${{ matrix.mingw != true }}

``````````

</details>


https://github.com/llvm/llvm-project/pull/161907