cpu: k60: remove ssp code

cpu/k60/Makefile.include

@@ -18,6 +18,5 @@ export COMMON_STARTUP = $(KINETIS_COMMON)
 
 # add the CPU specific system calls implementations for the linker
 export UNDEF += $(BINDIR)/cpu/vectors.o
-export UNDEF += $(BINDIR)/cpu/ssp.o
 
 include $(RIOTMAKE)/arch/cortexm.inc.mk

cpu/k60/ssp.c

@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2015 Eistec AB
- *
- * This file is subject to the terms and conditions of the GNU Lesser General
- * Public License v2.1. See the file LICENSE in the top level directory for more
- * details.
- */
-
-#include "cpu.h"
-
-/**
- * @ingroup         cpu_k60
- * @{
- *
- * @file
- * @brief           Implementation of stack smashing protection helper functions used by GCC's -fstack-protector
- *
- * @author          Joakim Nohlgård <joakim.nohlgard@eistec.se>
- */
-
-void *__stack_chk_guard = 0;
-
-void __stack_chk_guard_setup(void)
-{
-    unsigned char *p;
-    p = (unsigned char *) &__stack_chk_guard;
-
-    /* TODO: This should be replaced by a random number to use as a canary value */
-    p[0] = 0;
-    p[1] = 0;
-    p[2] = '\n';
-    p[3] = 255;
-}
-
-/*
- * Arrange so that the __stack_chk_guard_setup function is called during
- * early init.
- */
-void __attribute__((section(".preinit_array")))(*preinit__stack_chk_guard_setup[])(void) = {__stack_chk_guard_setup};
-
-/**
- * @brief Handler for stack smashing protection failure.
- *
- * This is called if the SSP checks fail, which means that the stack has been
- * corrupted.
- */
-void __attribute__((noreturn)) __stack_chk_fail(void)
-{
-    __asm__ volatile ("bkpt #1");
-
-    while (1);
-}
-/** @} */