[gn build] Port 3a6340768631
diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index 229a056..343af16 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -277,7 +277,6 @@
       "__assert",
       "__atomic/aliases.h",
       "__atomic/atomic.h",
-      "__atomic/atomic_base.h",
       "__atomic/atomic_flag.h",
       "__atomic/atomic_init.h",
       "__atomic/atomic_lock_free.h",