Revert `[RetVal]` annotation for multi-output `DCompositionGetStatistics()` (#1980)

This function returns multiple values via multiple mutable pointer
arguments, besides the annotated `frameStats` parameter not being the
last parameter.

Revert it because it has no effect on `windows-rs` and could even
break in the future, because it's not intended to be used this way.

Co-authored-by: Mike Battista <13860912+mikebattista@users.noreply.github.com>

scripts/ChangesSinceLastRelease.txt

@@ -1,7 +1,6 @@
 # Annotate ComOutPtr in CompositionSwapchain and DirectComposition
 Windows.Win32.Graphics.CompositionSwapchain.Apis.CreatePresentationFactory : presentationFactory : [Out] => [ComOutPtr,Out]
 Windows.Win32.Graphics.CompositionSwapchain.IPresentationManager.GetPresentRetiringFence : fence : [Out,RetVal] => [ComOutPtr,Out,RetVal]
-Windows.Win32.Graphics.DirectComposition.Apis.DCompositionGetStatistics : frameStats : [Out] => [Out,RetVal]
 Windows.Win32.Graphics.DirectComposition.Apis.DCompositionGetTargetStatistics : targetStats : [Out] => [Out,RetVal]
 Windows.Win32.Graphics.DirectComposition.IDCompositionDevice.GetFrameStatistics : statistics : [Out] => [Out,RetVal]
 Windows.Win32.Graphics.DirectComposition.IDCompositionDevice2.GetFrameStatistics : statistics : [Out] => [Out,RetVal]