bosch_bmi160: fix duplicate code from git merge

Change-Id: If3c3dd39e9cfa4c4cc4b30ad41e752427fdd72cd
diff --git a/firmware/src/drivers/bosch_bmi160/bosch_bmi160.c b/firmware/src/drivers/bosch_bmi160/bosch_bmi160.c
index 5678852..5a4b13f 100644
--- a/firmware/src/drivers/bosch_bmi160/bosch_bmi160.c
+++ b/firmware/src/drivers/bosch_bmi160/bosch_bmi160.c
@@ -451,10 +451,6 @@
     uint32_t stepCntSamplingTimerHandle;
     bool step_cnt_changed;
 
-    // for step count
-    uint32_t stepCntSamplingTimerHandle;
-    bool step_cnt_changed;
-
     // spi buffers
     int xferCnt;
     uint8_t *dataBuffer;