Delete unused GetBitMap() in fx_agg_driver

core/fxge/agg/fx_agg_driver.cpp

Index: core/fxge/agg/fx_agg_driver.cpp
diff --git a/core/fxge/agg/fx_agg_driver.cpp b/core/fxge/agg/fx_agg_driver.cpp
index bb3d7af4001c84c3fff2abebd1652d8a07c03432..6271c1097e84a3fe48f12dba0503b08d1313ed66 100644
--- a/core/fxge/agg/fx_agg_driver.cpp
+++ b/core/fxge/agg/fx_agg_driver.cpp
@@ -446,10 +446,6 @@ uint8_t* CFX_AggDeviceDriver::GetBuffer() const {
   return m_pBitmap->GetBuffer();
 }
 
-const CFX_DIBitmap* CFX_AggDeviceDriver::GetBitmap() const {
-  return m_pBitmap;
-}
-
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
 void CFX_AggDeviceDriver::InitPlatform() {}