Remove redundant dependencies in http/server/fast example

Signed-off-by: Damian Jarek <damian.jarek93@gmail.com>

example/http/server/fast/Jamfile

@@ -12,5 +12,4 @@ exe http-server-fast :
     :
     <variant>coverage:<build>no
     <variant>ubasan:<build>no
-    <library>/boost/coroutine//boost_coroutine
     ;

example/http/server/fast/http_server_fast.cpp

@@ -19,7 +19,6 @@
 #include <boost/beast/http.hpp>
 #include <boost/beast/version.hpp>
 #include <boost/asio.hpp>
-#include <boost/filesystem.hpp>
 #include <chrono>
 #include <cstdlib>
 #include <cstring>