[sw/device] Remove redundant #include <string.h>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
diff --git a/sw/device/exts/common/_crt.c b/sw/device/exts/common/_crt.c
index c5a65f2..0af5c1e 100644
--- a/sw/device/exts/common/_crt.c
+++ b/sw/device/exts/common/_crt.c
@@ -2,8 +2,6 @@
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
-#include <string.h>
-
#include "sw/device/lib/common.h"
#include "sw/device/lib/irq.h"
diff --git a/sw/device/tests/hmac/sha256_test.c b/sw/device/tests/hmac/sha256_test.c
index 8b5d7ea..433b1e5 100644
--- a/sw/device/tests/hmac/sha256_test.c
+++ b/sw/device/tests/hmac/sha256_test.c
@@ -3,7 +3,6 @@
// SPDX-License-Identifier: Apache-2.0
#include <stdlib.h>
-#include <string.h>
#include "sw/device/lib/common.h"
#include "sw/device/lib/flash_ctrl.h"
diff --git a/sw/device/tests/rv_timer/rv_timer_test.c b/sw/device/tests/rv_timer/rv_timer_test.c
index 76721f7..d0026a1 100644
--- a/sw/device/tests/rv_timer/rv_timer_test.c
+++ b/sw/device/tests/rv_timer/rv_timer_test.c
@@ -3,7 +3,6 @@
// SPDX-License-Identifier: Apache-2.0
#include <stdlib.h>
-#include <string.h>
#include "sw/device/lib/common.h"
#include "sw/device/lib/irq.h"