Removed unused headers (#703)

Author: JohanMabille

include/xeus-python/xdebugger.hpp

@@ -16,11 +16,8 @@
     #pragma GCC diagnostic ignored "-Wattributes"
 #endif
 
-#include <map>
 #include <memory>
-#include <mutex>
-#include <set>
-#include <thread>
+#include <string>
 
 #include "nlohmann/json.hpp"
 #include "pybind11/pybind11.h"

src/xdebugger.cpp

@@ -8,12 +8,8 @@
 * The full license is in the file LICENSE, distributed with this software. *
 ****************************************************************************/
 
-#include <cctype>
-#include <cstdlib>
 #include <fstream>
 #include <iostream>
-#include <string>
-#include <thread>
 
 // This must be included BEFORE pybind
 // otherwise it fails to build on Windows