From b9b3cd4000be6697f8e4577066e9307277a0bec8 Mon Sep 17 00:00:00 2001
From: JulianHolzwarth <julian.holzwarth@fu-berlin.de>
Date: Fri, 31 May 2019 17:11:52 +0200
Subject: [PATCH] Revert "REMOVE ME"

this reverts commit d3511829ac6c9638e7f34a998596af3a87d2c40a
---
 core/mutex.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/core/mutex.c b/core/mutex.c
index 4b99209f14ac7..fb6b3423f5ea4 100644
--- a/core/mutex.c
+++ b/core/mutex.c
@@ -29,14 +29,11 @@
 #include "irq.h"
 #include "list.h"
 
-#include "xtimer.h"
-
 #define ENABLE_DEBUG    (0)
 #include "debug.h"
 
 int _mutex_lock(mutex_t *mutex, volatile int *blocking)
 {
-    xtimer_spin(xtimer_ticks_from_usec(XTIMER_BACKOFF * 4));    /* longer than timeout of xtimer_mutex_lock_timeout in test */
     unsigned irqstate = irq_disable();
 
     DEBUG("PID[%" PRIkernel_pid "]: Mutex in use.\n", sched_active_pid);