Remove uses of BOOST_SP_NOEXCEPT from enable_shared_from_this.hpp

include/boost/smart_ptr/enable_shared_from_this.hpp

@@ -15,7 +15,6 @@
 
 #include <boost/smart_ptr/weak_ptr.hpp>
 #include <boost/smart_ptr/shared_ptr.hpp>
-#include <boost/smart_ptr/detail/sp_noexcept.hpp>
 #include <boost/assert.hpp>
 #include <boost/config.hpp>
 
@@ -26,20 +25,20 @@ template<class T> class enable_shared_from_this
 {
 protected:
 
-    BOOST_CONSTEXPR enable_shared_from_this() BOOST_SP_NOEXCEPT
+    BOOST_CONSTEXPR enable_shared_from_this() noexcept
     {
     }
 
-    BOOST_CONSTEXPR enable_shared_from_this(enable_shared_from_this const &) BOOST_SP_NOEXCEPT
+    BOOST_CONSTEXPR enable_shared_from_this(enable_shared_from_this const &) noexcept
     {
     }
 
-    enable_shared_from_this & operator=(enable_shared_from_this const &) BOOST_SP_NOEXCEPT
+    enable_shared_from_this & operator=(enable_shared_from_this const &) noexcept
     {
         return *this;
     }
 
-    ~enable_shared_from_this() BOOST_SP_NOEXCEPT // ~weak_ptr<T> newer throws, so this call also must not throw
+    ~enable_shared_from_this() noexcept // ~weak_ptr<T> newer throws, so this call also must not throw
     {
     }
 
@@ -59,20 +58,20 @@ template<class T> class enable_shared_from_this
         return p;
     }
 
-    weak_ptr<T> weak_from_this() BOOST_SP_NOEXCEPT
+    weak_ptr<T> weak_from_this() noexcept
     {
         return weak_this_;
     }
 
-    weak_ptr<T const> weak_from_this() const BOOST_SP_NOEXCEPT
+    weak_ptr<T const> weak_from_this() const noexcept
     {
         return weak_this_;
     }
 
 public: // actually private, but avoids compiler template friendship issues
 
     // Note: invoked automatically by shared_ptr; do not call
-    template<class X, class Y> void _internal_accept_owner( shared_ptr<X> const * ppx, Y * py ) const BOOST_SP_NOEXCEPT
+    template<class X, class Y> void _internal_accept_owner( shared_ptr<X> const * ppx, Y * py ) const noexcept
     {
         if( weak_this_.expired() )
         {