[libc++] Granularize <type_traits> includes in <compare>
Reviewed By: Mordante, #libc
Spies: libcxx-commits
Differential Revision: https://reviews.llvm.org/D140480
NOKEYCHECK=True
GitOrigin-RevId: e0a66116fcccd59d12485810f5311efafa134ea5
diff --git a/include/valarray b/include/valarray
index 6c33d05..11a273d 100644
--- a/include/valarray
+++ b/include/valarray
@@ -353,6 +353,7 @@
#include <__functional/operations.h>
#include <__memory/allocator.h>
#include <__memory/uninitialized_algorithms.h>
+#include <__type_traits/remove_reference.h>
#include <__utility/move.h>
#include <__utility/swap.h>
#include <cmath>