Several pure virtual IFWL_Adapter* classes not implemented.

xfa/src/fxfa/src/app/xfa_ffapp.cpp

Index: xfa/src/fxfa/src/app/xfa_ffapp.cpp
diff --git a/xfa/src/fxfa/src/app/xfa_ffapp.cpp b/xfa/src/fxfa/src/app/xfa_ffapp.cpp
index c9e791a3beeae64d2aa58c6694380d7f56df33e4..e153d956c5bfe3770147cc1533f86e9c56db34a4 100644
--- a/xfa/src/fxfa/src/app/xfa_ffapp.cpp
+++ b/xfa/src/fxfa/src/app/xfa_ffapp.cpp
@@ -204,12 +204,3 @@ IFWL_AdapterThreadMgr* CXFA_FFApp::GetThreadMgr() {
 IFWL_AdapterTimerMgr* CXFA_FFApp::GetTimerMgr() {
   return m_pProvider->GetTimerMgr();
 }
-IFWL_AdapterCursorMgr* CXFA_FFApp::GetCursorMgr() {
-  return NULL;
-}
-IFWL_AdapterMonitorMgr* CXFA_FFApp::GetMonitorMgr() {
-  return NULL;
-}
-IFWL_AdapterClipboardMgr* CXFA_FFApp::GetClipboardMgr() {
-  return NULL;
-}