[llvm] [cross-project-tests] Use lit internal shell (PR #203138)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 created https://github.com/llvm/llvm-project/pull/203138

The external shell will be going away soon and this doesn't cause any test failures, so we should just switch over to it. Not doing this also blocks deprecation of the external shell.

>From f9ecf5cdb1bba419cb0c6cd97c09734ee5dae404 Mon Sep 17 00:00:00 2001
From: Aiden Grossman <aidengrossman at google.com>
Date: Thu, 11 Jun 2026 00:50:11 +0000
Subject: [PATCH] [cross-project-tests] Use lit internal shell

The external shell will be going away soon and this doesn't cause any
test failures, so we should just switch over to it. Not doing this also
blocks deprecation of the external shell.
---
 cross-project-tests/lit.cfg.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cross-project-tests/lit.cfg.py b/cross-project-tests/lit.cfg.py
index df45221d90ef3..02fd536462575 100644
--- a/cross-project-tests/lit.cfg.py
+++ b/cross-project-tests/lit.cfg.py
@@ -16,7 +16,7 @@
 config.name = "cross-project-tests"
 
 # testFormat: The test format to use to interpret tests.
-config.test_format = lit.formats.ShTest(not llvm_config.use_lit_shell)
+config.test_format = lit.formats.ShTest()
 
 # suffixes: A list of file extensions to treat as test files.
 config.suffixes = [".c", ".cl", ".cpp", ".m", ".test"]