nRF52840: Removed unused, commented code

Author: kl-cruz

targets/TARGET_NORDIC/TARGET_NRF5_SDK13/flash_api.c

@@ -43,14 +43,6 @@
 
 #if DEVICE_FLASH
 
-/*
-    uint8_t sd_enabled;
-    if ((sd_softdevice_is_enabled(&sd_enabled) == NRF_SUCCESS) && sd_enabled == 1)
-    {
-        return -1;
-    }
-*/
-
 int32_t flash_init(flash_t *obj)
 {
     (void)(obj);