Revert "Redo ReadSaveBuf + common.h cleanup"

This reverts commit 2b67aba94c.

src/render/Console.h

@@ -23,5 +23,3 @@ public:
 };
 
 extern CConsole TheConsole;
-
-void cprintf(char*, ...);

src/render/Particle.cpp

@@ -14,7 +14,6 @@
 #include "ParticleObject.h"
 #include "Particle.h"
 #include "soundlist.h"
-#include "debugmenu.h"
 
 
 #define MAX_PARTICLES_ON_SCREEN   (1000)