SystemTask: remove unused ble includes

Remove unused includes. The firmware still compiles fine without the
includes.

Author: NeroBurner

src/systemtask/SystemTask.cpp

@@ -1,13 +1,4 @@
 #include "systemtask/SystemTask.h"
-#define min // workaround: nimble's min/max macros conflict with libstdc++
-#define max
-#include <host/ble_gap.h>
-#include <host/ble_gatt.h>
-#include <host/ble_hs_adv.h>
-#include <host/util/util.h>
-#include <nimble/hci_common.h>
-#undef max
-#undef min
 #include <hal/nrf_rtc.h>
 #include <libraries/gpiote/app_gpiote.h>
 #include <libraries/log/nrf_log.h>