Clear windows branch; preserve previous contents in win-old

tools/d4r_event_wait.h

@@ -1,16 +0,0 @@
-#pragma once
-
-// Query completion rather than trusting HIP event flags to put the CPU to
-// sleep. Never treat NOT_READY as completion, including during retirement.
-template <typename Query, typename Sleep>
-int d4r_wait_event(Query query, Sleep sleep)
-{
-    constexpr int cudaNotReady = 600;
-    for (;;)
-    {
-        const int result = query();
-        if (result != cudaNotReady)
-            return result;
-        sleep();
-    }
-}