Use normal LoadLibrary for loading d3d11_proxy

For some reason, LOAD_LIBRARY_SEARCH_APPLICATION_DIR won't find a dxvk dll next to the main exe on Windows

main.cpp

@@ -45,7 +45,7 @@ D3D11Proc loadSystemD3D11() {
   if (d3d11Proc.D3D11CreateDevice)
     return d3d11Proc;
 
-  HMODULE libD3D11 = LoadLibraryExA("d3d11_proxy.dll", nullptr, LOAD_LIBRARY_SEARCH_APPLICATION_DIR);
+  HMODULE libD3D11 = LoadLibraryA("d3d11_proxy.dll");
 
   if (libD3D11) {
     log("Using d3d11_proxy.dll");