Remove handling for Windows versions that are no longer supported

app/streaming/video/ffmpeg-renderers/d3d11va.cpp

@@ -10,7 +10,6 @@
 #include "streaming/session.h"
 
 #include <SDL_syswm.h>
-#include <VersionHelpers.h>
 
 #include <dwmapi.h>
 
@@ -465,13 +464,6 @@ bool D3D11VARenderer::initialize(PDECODER_PARAMETERS params)
                     "D3D11VA is disabled by environment variable");
         return false;
     }
-    else if (!IsWindows10OrGreater()) {
-        // Use DXVA2 on anything older than Win10, so we don't have to handle a bunch
-        // of legacy Win7/Win8 codepaths in here.
-        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-                     "D3D11VA renderer is only supported on Windows 10 or later.");
-        return false;
-    }
 
     if (!SDL_DXGIGetOutputInfo(SDL_GetWindowDisplayIndex(params->window),
                                &m_AdapterIndex, &outputIndex)) {