remove useless assert and its temp variable that broke the build.

indra/newview/llnearbychatbar.cpp

@@ -393,8 +393,6 @@ LLGestureComboList::~LLGestureComboList()
 
 LLCtrlListInterface* LLGestureComboList::getListInterface()
 {
-	LLCtrlListInterface *result = mList;
-	llassert((LLCtrlListInterface*)mList==result);
 	return mList;
 };