[libcxx] [llvm] [libc++] Remove unused _LIBCPP_HAS_NO_STD_MODULES macro from __config_site (PR #148902)

[Louis Dionne via llvm-commits]

https://github.com/ldionne created https://github.com/llvm/llvm-project/pull/148902

Since 1d6b6132f, that macro isn't used anywhere anymore.

>From f7a963e2e7c0a0e3a93549b12571515e81c81ada Mon Sep 17 00:00:00 2001
From: Louis Dionne <ldionne.2 at gmail.com>
Date: Tue, 15 Jul 2025 13:17:10 -0400
Subject: [PATCH] [libc++] Remove unused _LIBCPP_HAS_NO_STD_MODULES macro from
 __config_site

Since 1d6b6132f, that macro isn't used anywhere anymore.
---
 libcxx/include/__config_site.in                 | 1 -
 llvm/utils/gn/secondary/libcxx/include/BUILD.gn | 1 -
 2 files changed, 2 deletions(-)

diff --git a/libcxx/include/__config_site.in b/libcxx/include/__config_site.in
index fc01aaf2d8746..b68c0c8258366 100644
--- a/libcxx/include/__config_site.in
+++ b/libcxx/include/__config_site.in
@@ -30,7 +30,6 @@
 #cmakedefine01 _LIBCPP_HAS_LOCALIZATION
 #cmakedefine01 _LIBCPP_HAS_UNICODE
 #cmakedefine01 _LIBCPP_HAS_WIDE_CHARACTERS
-#cmakedefine _LIBCPP_HAS_NO_STD_MODULES
 #cmakedefine01 _LIBCPP_HAS_TIME_ZONE_DATABASE
 #cmakedefine01 _LIBCPP_INSTRUMENTED_WITH_ASAN
 
diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index 6051674a790e8..f6473c672a050 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -35,7 +35,6 @@ if (current_toolchain == default_toolchain) {
       "_LIBCPP_HAS_LOCALIZATION=1",
       "_LIBCPP_HAS_UNICODE=1",
       "_LIBCPP_HAS_WIDE_CHARACTERS=1",
-      "_LIBCPP_HAS_NO_STD_MODULES=",
       "_LIBCPP_HAS_TERMINAL=1",
       "_LIBCPP_INSTRUMENTED_WITH_ASAN=",
       "_LIBCPP_ABI_DEFINES=",