[gn build] Port 6c257754d955

llvm/utils/gn/secondary/libcxx/include/BUILD.gn

diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index 29a37c2..05ac4c3 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -1438,7 +1438,6 @@
       "__tuple/make_tuple_types.h",
       "__tuple/sfinae_helpers.h",
       "__tuple/tuple_element.h",
-      "__tuple/tuple_indices.h",
       "__tuple/tuple_like.h",
       "__tuple/tuple_like_ext.h",
       "__tuple/tuple_like_no_subrange.h",