1 files changed, 0 insertions, 17 deletions
diff --git a/runtime/base/stl_util.h b/runtime/base/stl_util.h
index cfe27f3811..f99465ab66 100644
--- a/runtime/base/stl_util.h
+++ b/runtime/base/stl_util.h
@@ -171,23 +171,6 @@ struct FNVHash {
   }
 };
 
-// Use to suppress type deduction for a function argument.
-// See std::identity<> for more background:
-// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1856.html#20.2.2 - move/forward helpers
-//
-// e.g. "template <typename X> void bar(identity<X>::type foo);
-//     bar(5); // compilation error
-//     bar<int>(5); // ok
-// or "template <typename T> void foo(T* x, typename Identity<T*>::type y);
-//     Base b;
-//     Derived d;
-//     foo(&b, &d);  // Use implicit Derived* -> Base* conversion.
-// If T was deduced from both &b and &d, there would be a mismatch, i.e. deduction failure.
-template <typename T>
-struct Identity {
-  using type = T;
-};
-
 // Merge `other` entries into `to_update`.
 template <typename T>
 static inline void MergeSets(std::set<T>& to_update, const std::set<T>& other) {