remove example using segmented stacks

- segemented stacks can only be used by execution_context (v1)
- boost.coroutine2 does not support execution_context (v1)

example/Jamfile.v2

@@ -39,7 +39,3 @@ exe layout
 exe parser
     : parser.cpp
     ;
-
-#exe segmented
-#    : segmented.cpp
-#    ;

example/segmented.cpp

@@ -1,54 +0,0 @@
-
-//          Copyright Oliver Kowalke 2014.
-// Distributed under the Boost Software License, Version 1.0.
-//    (See accompanying file LICENSE_1_0.txt or copy at
-//          http://www.boost.org/LICENSE_1_0.txt)
-
-#include <cstdlib>
-#include <iostream>
-
-#include <boost/config.hpp>
-
-#include <boost/coroutine2/all.hpp>
-
-#ifdef BOOST_MSVC //MS VisualStudio
-__declspec(noinline) void access( char *buf);
-#else // GCC
-void access( char *buf) __attribute__ ((noinline));
-#endif
-void access( char *buf)
-{
-  buf[0] = '\0';
-}
-
-void bar( int i)
-{
-    char buf[4 * 1024];
-
-    if ( i > 0)
-    {
-        access( buf);
-        std::cout << i << ". iteration" << std::endl;
-        bar( i - 1);
-    }
-}
-
-int main() {
-    int count = 384;
-
-    std::cout << "using segmented_stack stacks: allocates " << count << " * 4kB == " << 4 * count << "kB on stack, ";
-    std::cout << "initial stack size = " << boost::context::segmented_stack::traits_type::default_size() / 1024 << "kB" << std::endl;
-    std::cout << "application should not fail" << std::endl;
-
-    boost::coroutines2::coroutine< void >::push_type sink(
-        [&]( boost::coroutines2::coroutine< void >::pull_type & source) {
-            bar( count);
-            source();
-        });
-    
-    sink();
-
-    std::cout << "main: Done" << std::endl;
-
-    return 0;
-}