C++ Errors

Below is my code
#include "std_lib_facilities.h"
int main()
{
    cout << "From my chair, get up and turn around facing south.\n";
    cout << "Then walk down the hall for about 12 feet and stop.\n";
    cout << "Then turn right and open the door.\n";
    cout << "Walk in for about 6 feet and there is the throne.\n";
    return 0;
}

When I compile it I get this error
 g++ ch2_exercise_part2.cpp -o ch2_exercise_part2
In file included from /usr/include/c++/4.9/ext/hash_map:60:0,
                 from std_lib_facilities.h:34,
                 from ch2_exercise_part2.cpp:1:
/usr/include/c++/4.9/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header which may be removed without further notice at a future date. Please use a non-deprecated interface with equivalent functionality instead. For a listing of replacement headers and interfaces, consult the file backward_warning.h. To disable this warning use -Wno-deprecated. [-Wcpp]
 #warning \
  ^
Yet when I run ./ch2_exercise_part2 it executes no problem with no errors and prints out all my text to the screen.
So I checked the file /usr/include/c++/4.9/backward/backward_warning.h
And found this

 A list of valid replacements is as follows:

  Use:                  Instead of:
  <sstream>, basic_stringbuf        <strstream>, strstreambuf
  <sstream>, basic_istringstream    <strstream>, istrstream
  <sstream>, basic_ostringstream    <strstream>, ostrstream
  <sstream>, basic_stringstream     <strstream>, strstream
  <unordered_set>, unordered_set        <ext/hash_set>, hash_set
  <unordered_set>, unordered_multiset   <ext/hash_set>, hash_multiset
  <unordered_map>, unordered_map    <ext/hash_map>, hash_map
  <unordered_map>, unordered_multimap   <ext/hash_map>, hash_multimap
  <functional>, bind            <functional>, binder1st
  <functional>, bind            <functional>, binder2nd
  <functional>, bind            <functional>, bind1st
  <functional>, bind            <functional>, bind2nd
  <memory>, unique_ptr              <memory>, auto_ptr

I can't find what I need to replace in my code though with the above stuff.
I am using Vim and Linux terminal to work with right now.