dxgi/tests: We don't need a custom window class.

dlls/dxgi/tests/device.c

@@ -396,7 +396,6 @@ static void test_createswapchain(void)
     IDXGISwapChain *swapchain;
     DXGI_SWAP_CHAIN_DESC creation_desc, result_desc;
     HRESULT hr;
-    WNDCLASSA wc = {0};
     UINT i;
 
     const struct refresh_rates refresh_list[] =
@@ -414,11 +413,6 @@ static void test_createswapchain(void)
         return;
     }
 
-    wc.lpfnWndProc = DefWindowProcA;
-    wc.lpszClassName = "dxgi_test_wc";
-
-    RegisterClassA(&wc);
-
     creation_desc.OutputWindow = 0;
     creation_desc.BufferDesc.Width = 800;
     creation_desc.BufferDesc.Height = 600;
@@ -431,7 +425,7 @@ static void test_createswapchain(void)
     creation_desc.SampleDesc.Quality = 0;
     creation_desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
     creation_desc.BufferCount = 1;
-    creation_desc.OutputWindow = CreateWindowA("dxgi_test_wc", "dxgi_test", 0, 0, 0, 0, 0, 0, 0, 0, 0);
+    creation_desc.OutputWindow = CreateWindowA("static", "dxgi_test", 0, 0, 0, 0, 0, 0, 0, 0, 0);
     creation_desc.Windowed = TRUE;
     creation_desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
     creation_desc.Flags = 0;