Removed Sleep( ) workaround for Windows Store builds

src/common/utilities.cpp

@@ -797,32 +797,7 @@ void writeFile(const char* path, const void* content, size_t size)
 // to run, the function returns immediately, and the thread continues execution.
 void ScheduleYield()
 {
-#if defined(ANGLE_ENABLE_WINDOWS_STORE)
-    // This implementation of Sleep exists because it is not available prior to Update 4.
-    static HANDLE singletonEvent = nullptr;
-    HANDLE sleepEvent = singletonEvent;
-    if (!sleepEvent)
-    {
-        sleepEvent = CreateEventEx(nullptr, nullptr, CREATE_EVENT_MANUAL_RESET, EVENT_ALL_ACCESS);
-
-        if (!sleepEvent)
-            return;
-
-        HANDLE previousEvent = InterlockedCompareExchangePointerRelease(&singletonEvent, sleepEvent, nullptr);
-
-        if (previousEvent)
-        {
-            // Back out if multiple threads try to demand create at the same time.
-            CloseHandle(sleepEvent);
-            sleepEvent = previousEvent;
-        }
-    }
-
-    // Emulate sleep by waiting with timeout on an event that is never signalled.
-    WaitForSingleObjectEx(sleepEvent, 0, false);
-#else
     Sleep(0);
-#endif
 }
 
 #endif