Update xy_index_range_iterator.h

SimoxUtility/iterator/xy_index_range_iterator.h

 #pragma once
 
-#include <exception>
-#include <iostream> // FIXME remove
 #include <iterator>
-#include <vector>
 
 namespace simox::iterator {
 
@@ -87,4 +84,4 @@ private:
 };
 
 
-} // namespace simox::iterator
\ No newline at end of file
+} // namespace simox::iterator