--- Source/WTF/wtf/Optional.h	(revision 235660)
+++ Source/WTF/wtf/Optional.h	(revision 235661)
@@ -278,12 +278,4 @@
 
 
-// 20.5.8, class bad_optional_access
-class bad_optional_access : public std::logic_error {
-public:
-  explicit bad_optional_access(const std::string& what_arg) : std::logic_error{what_arg} {}
-  explicit bad_optional_access(const char* what_arg) : std::logic_error{what_arg} {}
-};
-
-
 template <class T>
 union storage_t