Remove some obsolete debugging code

vm/gc.c

@@ -179,8 +179,6 @@ CELL copy_object(CELL pointer)
 	CELL tag;
 	CELL header;
 
-	gc_debug("copy object",pointer);
-
 	if(pointer == F)
 		return F;
 
@@ -347,11 +345,7 @@ void garbage_collection(CELL gen)
 
 	end_gc(gen);
 
-	gc_debug("gc done",gen);
-
 	gc_time += (current_millis() - start);
-	
-	gc_debug("total gc time",gc_time);
 }
 
 void primitive_gc(void)

vm/gc.h

@@ -53,14 +53,6 @@ so we have to check that the pointer occurs after the beginning of
 the requested generation. */
 #define COLLECTING_GEN(ptr) (collecting_gen_start <= ptr)
 
-/* #define GC_DEBUG */
-
-INLINE void gc_debug(char* msg, CELL x) {
-#ifdef GC_DEBUG
-	printf("%s %ld\n",msg,x);
-#endif
-}
-
 INLINE bool should_copy(CELL untagged)
 {
 	if(collecting_gen == TENURED)