Remove unused widget handler overrides

fpdfsdk/cpdfsdk_xfawidgethandler.cpp

Index: fpdfsdk/cpdfsdk_xfawidgethandler.cpp
diff --git a/fpdfsdk/cpdfsdk_xfawidgethandler.cpp b/fpdfsdk/cpdfsdk_xfawidgethandler.cpp
index 8551445ef17081f7930976934ae172e5bdef768a..48fda86476238acf17bfc1bbb393323de8b188e8 100644
--- a/fpdfsdk/cpdfsdk_xfawidgethandler.cpp
+++ b/fpdfsdk/cpdfsdk_xfawidgethandler.cpp
@@ -69,14 +69,8 @@ void CPDFSDK_XFAWidgetHandler::OnDraw(CPDFSDK_PageView* pPageView,
   // to do highlight and shadow
 }
 
-void CPDFSDK_XFAWidgetHandler::OnCreate(CPDFSDK_Annot* pAnnot) {}
-
 void CPDFSDK_XFAWidgetHandler::OnLoad(CPDFSDK_Annot* pAnnot) {}
 
-void CPDFSDK_XFAWidgetHandler::OnDelete(CPDFSDK_Annot* pAnnot) {}
-
-void CPDFSDK_XFAWidgetHandler::OnRelease(CPDFSDK_Annot* pAnnot) {}
-
 void CPDFSDK_XFAWidgetHandler::ReleaseAnnot(CPDFSDK_Annot* pAnnot) {
   CPDFSDK_XFAWidget* pWidget = reinterpret_cast<CPDFSDK_XFAWidget*>(pAnnot);
   CPDFSDK_InterForm* pInterForm = pWidget->GetInterForm();
@@ -85,8 +79,6 @@ void CPDFSDK_XFAWidgetHandler::ReleaseAnnot(CPDFSDK_Annot* pAnnot) {
   delete pWidget;
 }
 
-void CPDFSDK_XFAWidgetHandler::DeleteAnnot(CPDFSDK_Annot* pAnnot) {}
-
 CFX_FloatRect CPDFSDK_XFAWidgetHandler::GetViewBBox(CPDFSDK_PageView* pPageView,
                                                     CPDFSDK_Annot* pAnnot) {
   ASSERT(pAnnot);
@@ -292,10 +284,6 @@ FX_BOOL CPDFSDK_XFAWidgetHandler::OnKeyUp(CPDFSDK_Annot* pAnnot,
                                  GetFWLFlags(nFlag));
 }
 
-void CPDFSDK_XFAWidgetHandler::OnDeSelected(CPDFSDK_Annot* pAnnot) {}
-
-void CPDFSDK_XFAWidgetHandler::OnSelected(CPDFSDK_Annot* pAnnot) {}
-
 FX_BOOL CPDFSDK_XFAWidgetHandler::OnSetFocus(CPDFSDK_Annot::ObservedPtr* pAnnot,
                                              uint32_t nFlag) {
   return TRUE;