XFA: Remove dead AddDoRecord code.

xfa/src/fxfa/src/app/xfa_ffchoicelist.cpp

Index: xfa/src/fxfa/src/app/xfa_ffchoicelist.cpp
diff --git a/xfa/src/fxfa/src/app/xfa_ffchoicelist.cpp b/xfa/src/fxfa/src/app/xfa_ffchoicelist.cpp
index 6459dc72a31b541054c5ff6d2d96898f0b31eaf8..270ea86174f92ee726a43416e397e1f219f0e093 100644
--- a/xfa/src/fxfa/src/app/xfa_ffchoicelist.cpp
+++ b/xfa/src/fxfa/src/app/xfa_ffchoicelist.cpp
@@ -501,9 +501,7 @@ void CXFA_FFComboBox::OnPostOpen(IFWL_Widget* pWidget) {
   eParam.m_pTarget = m_pDataAcc;
   m_pDataAcc->ProcessEvent(XFA_ATTRIBUTEENUM_PostOpen, &eParam);
 }
-void CXFA_FFComboBox::OnAddDoRecord(IFWL_Widget* pWidget) {
-  GetDoc()->GetDocProvider()->AddDoRecord(this);
-}
+
 int32_t CXFA_FFComboBox::OnProcessMessage(CFWL_Message* pMessage) {
   return m_pOldDelegate->OnProcessMessage(pMessage);
 }