Removing unused (and non-existent) includes

Author: tturocy

src/gui/layout.cc

@@ -20,13 +20,8 @@
 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 //
 
-#include <algorithm> // for std::min, std::max
-#include <numeric>   // for std::partial_sum
-
 #include "layout.h"
 
-#include <__ostream/basic_ostream.h>
-
 namespace Gambit {
 
 void Layout::LayoutSubtree(const GameNode &p_node, const BehaviorSupportProfile &p_support,