log, printf: fix missing "rt.h" include

kernel/src/sys/log.c

@@ -1,4 +1,3 @@
-#include "rt.h"
 #include "sys/arch/x86_64/io.h"
 #include "sys/gfx/flanterm/flanterm.h"
 #include <stdarg.h>

kernel/src/sys/printf.c

@@ -2,7 +2,6 @@
 // This code is part of the Soaplin kernel and is licensed under the terms of
 // the MIT License.
 #include "sys/gfx/flanterm/flanterm.h"
-#include <rt.h>
 #include <stdarg.h>
 
 #define NANOPRINTF_USE_FIELD_WIDTH_FORMAT_SPECIFIERS 1