Remove old std::atomic_ref polyfill. (#180)

Author: squidbus

MarathonRecomp/framework.h

@@ -83,47 +83,3 @@ inline bool strcmpIgnoreCase(const char* a, const char* b)
 
     return true;
 }
-
-#ifndef __cpp_lib_atomic_ref
-// Polyfill for std::atomic_ref
-namespace std {
-template <typename value_type>
-class atomic_ref
-{
-public:
-    atomic_ref(value_type& ref)
-    {
-        ptr = reinterpret_cast<std::atomic<value_type>*>(&ref);
-    }
-
-    void store(value_type desired)
-    {
-        ptr->store(desired);
-    }
-
-    bool compare_exchange_weak(value_type& expected, value_type desired)
-    {
-        return ptr->compare_exchange_weak(expected, desired);
-    }
-
-    void wait(value_type old)
-    {
-        ptr->wait(old);
-    }
-
-    void notify_one()
-    {
-        ptr->notify_one();
-    }
-
-    bool operator=(const value_type& rhs)
-    {
-        store(rhs);
-    }
-
-private:
-    std::atomic<value_type>* ptr;
-};
-}
-#endif
-