Remove BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX workarounds

include/boost/function/detail/epilogue.hpp

@@ -10,8 +10,6 @@
 // Resolve C++20 issue with fn == bind(...)
 // https://github.com/boostorg/function/issues/45
 
-#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
-
 namespace boost
 {
 
@@ -34,6 +32,4 @@ template<class S, class R, class F, class L> bool operator!=( function<S> const&
 
 } // namespace boost
 
-#endif // #if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
-
 #endif // #ifndef BOOST_FUNCTION_EPILOGUE_HPP