Comment that forwarding WM_MOUSEWHEEL from form to control seems no longer needed on Windows 10

Source commit: de8bd61a0d812e740c04668cbe355228e552fce2

source/windows/TerminalManager.cpp

@@ -788,6 +788,7 @@ void __fastcall TTerminalManager::ApplicationShowHint(UnicodeString & HintStr,
 //---------------------------------------------------------------------------
 bool __fastcall TTerminalManager::HandleMouseWheel(WPARAM WParam, LPARAM LParam)
 {
+  // WORKAROUND This is no longer necessary on Windows 10
   bool Result = false;
   if (Application->Active)
   {