Remove #include <timestamp.h> from files which do not need it

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/m68k/cpu/mcf5445x/start.S b/arch/m68k/cpu/mcf5445x/start.S
index 7007d78..40c4974 100644
--- a/arch/m68k/cpu/mcf5445x/start.S
+++ b/arch/m68k/cpu/mcf5445x/start.S
@@ -10,7 +10,6 @@
 #include <common.h>
 #include <asm-offsets.h>
 #include <config.h>
-#include <timestamp.h>
 #include "version.h"
 #include <asm/cache.h>
 
diff --git a/net/cdp.c b/net/cdp.c
index fac0204..a8f890e 100644
--- a/net/cdp.c
+++ b/net/cdp.c
@@ -11,9 +11,6 @@
 
 #include <common.h>
 #include <net.h>
-#if defined(CONFIG_CDP_VERSION)
-#include <timestamp.h>
-#endif
 
 #include "cdp.h"