[apps/code] Fix Python loading when going in the VarBoxController

The Var box controller deinited python on exit, and the console
controller did not reload python + it made the console controller lose
all its context, such as imported scripts

apps/code/variable_box_controller.h

@@ -34,7 +34,6 @@ private:
 
     /* Responder */
     void didEnterResponderChain(Responder * previousFirstResponder) override;
-    void willExitResponderChain(Responder * nextFirstResponder) override;
     void didBecomeFirstResponder() override;
     bool handleEvent(Ion::Events::Event event) override;