App: remove the uncessary cmsis.h include

This patch removes the cmsis.h include in app.
The cmsis.h is not necessary in app.

Change-Id: Ibf6ccfd8de13e26e24caec0a5514dc9752637405
Signed-off-by: Kevin Peng <kevin.peng@arm.com>
diff --git a/app/tfm_integ_test.c b/app/tfm_integ_test.c
index b2777da..cd33b76 100644
--- a/app/tfm_integ_test.c
+++ b/app/tfm_integ_test.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 - 2018, Arm Limited. All rights reserved.
+ * Copyright (c) 2017 - 2019, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  *
@@ -10,7 +10,6 @@
 #include <string.h>
 #include <stdbool.h>
 
-#include "cmsis.h"
 #include "tfm_api.h"
 #include "cmsis_os2.h"
 #include "tfm_nspm_api.h"