File libcxx-remove-unused-imports.patch of Package llvm15

From 017396310bb6515786eb9d9cf9fb0256de08d65b Mon Sep 17 00:00:00 2001
From: "Stephan T. Lavavej" <stl@nuwen.net>
Date: Tue, 28 Nov 2023 16:33:11 -0800
Subject: [PATCH] Remove unused Python imports.

Index: libcxx-15.0.7.src/utils/libcxx/test/format.py
===================================================================
--- libcxx-15.0.7.src.orig/utils/libcxx/test/format.py
+++ libcxx-15.0.7.src/utils/libcxx/test/format.py
@@ -9,9 +9,7 @@
 import lit
 import lit.formats
 import os
-import pipes
 import re
-import shutil
 
 def _getTempPaths(test):
     """