Remove FXSYS_Div.

core/src/fxge/agg/src/fx_agg_driver.cpp

Index: core/src/fxge/agg/src/fx_agg_driver.cpp
diff --git a/core/src/fxge/agg/src/fx_agg_driver.cpp b/core/src/fxge/agg/src/fx_agg_driver.cpp
index 50062541b18d5209b62d2308e87f996b5fce31b7..8b0e3f94f4db6997d97ab4c0b64ad62678cae1e0 100644
--- a/core/src/fxge/agg/src/fx_agg_driver.cpp
+++ b/core/src/fxge/agg/src/fx_agg_driver.cpp
@@ -144,8 +144,8 @@ static void RasterizeStroke(agg::rasterizer_scanline_aa& rasterizer,
   FX_FLOAT width = pGraphState->m_LineWidth * scale;
   FX_FLOAT unit = 1.f;
   if (pObject2Device) {
-    unit = FXSYS_Div(
-        1.0f, (pObject2Device->GetXUnit() + pObject2Device->GetYUnit()) / 2);
+    unit =
+        1.0f / ((pObject2Device->GetXUnit() + pObject2Device->GetYUnit()) / 2);
   }
   if (width < unit) {
     width = unit;