Don't need the .cpp file and turn off the fsm debugging.

src/gui/fsm.cpp

@@ -1,4 +1,3 @@
-#define FSM_DEBUG 1
 #include "gui/fsm.hpp"
 #include <iostream>
 #include <chrono>

src/gui/uistack.cpp

@@ -1,6 +0,0 @@
-#include "multiscreen.hpp"
-
-namespace gui {
-  using namespace std::chrono_literals;
-
-}