Moving the secret inside the tests, not in a library function.

kern/lib/kprintf.c

@@ -149,7 +149,7 @@ tkprintf(const char *fmt, ...)
 	int chars;
 	va_list ap;
 	
-	if (KERNEL_SECRET != 0) {
+	if (strcmp(KERNEL_SECRET, "") != 0) {
 		return 0;
 	}
 	
@@ -160,26 +160,6 @@ tkprintf(const char *fmt, ...)
 	return chars;
 }
 
-/*
- * kprintf variant that prints the automated secret
- */
-int
-skprintf(const char *fmt, ...)
-{
-	int chars;
-	va_list ap;
-	
-	if (KERNEL_SECRET != 0) {
-		kprintf("SECRET=%llu ", KERNEL_SECRET);
-	}
-	
-	va_start(ap, fmt);
-	chars = vkprintf(fmt, ap);
-	va_end(ap);
-
-	return chars;
-}
-
 /*
  * panic() is for fatal errors. It prints the printf arguments it's
  * passed and then halts the system.