[libc++] s/_VSTD::_IsSame/_IsSame/. NFCI.
NOKEYCHECK=True
GitOrigin-RevId: ac42f7609027e96fec94d35db8a638d6a583e8f8
diff --git a/include/concepts b/include/concepts
index 3dec9b5..99b340f 100644
--- a/include/concepts
+++ b/include/concepts
@@ -150,7 +150,7 @@
// [concept.same]
template<class _Tp, class _Up>
-concept __same_as_impl = _VSTD::_IsSame<_Tp, _Up>::value;
+concept __same_as_impl = _IsSame<_Tp, _Up>::value;
template<class _Tp, class _Up>
concept same_as = __same_as_impl<_Tp, _Up> && __same_as_impl<_Up, _Tp>;