Revert "Fix use of __libcpp_deallocate in dynarray"

This reverts commit r345234 as it depended on the sized deallocation commit.

llvm-svn: 345240
diff --git a/libcxx/include/experimental/dynarray b/libcxx/include/experimental/dynarray
index 00256c9..a60c87c 100644
--- a/libcxx/include/experimental/dynarray
+++ b/libcxx/include/experimental/dynarray
@@ -146,7 +146,7 @@
 
     static inline _LIBCPP_INLINE_VISIBILITY
     void __deallocate_value(value_type* __ptr ) noexcept {
-        _VSTD::__libcpp_deallocate_unsized(static_cast<void *>(__ptr), __alignof(value_type));
+        _VSTD::__libcpp_deallocate(static_cast<void *>(__ptr), __alignof(value_type));
     }
 
 public: