nrf: Remove unnecessary includes of mpconfigport.h and its header guard.

The mpconfigport.h file is an internal header and should only ever be
included once by mpconfig.h.
Signed-off-by: NDamien George <damien@micropython.org>

ports/nrf/drivers/bluetooth/ble_drv.c

@@ -32,7 +32,6 @@
 
 #include "py/runtime.h"
 #include "ble_drv.h"
-#include "mpconfigport.h"
 #include "nrf_sdm.h"
 #include "ble_gap.h"
 #include "ble.h" // sd_ble_uuid_encode

ports/nrf/modules/uos/microbitfs.c

@@ -36,7 +36,6 @@
 #include "py/stream.h"
 #include "py/runtime.h"
 #include "extmod/vfs.h"
-#include "mpconfigport.h"
 
 #if MICROPY_MBFS
 

ports/nrf/mpconfigport.h

@@ -24,9 +24,6 @@
  * THE SOFTWARE.
  */
 
-#ifndef NRF5_MPCONFIGPORT_H__
-#define NRF5_MPCONFIGPORT_H__
-
 #include <mpconfigboard.h>
 
 #if defined(NRF51822)
@@ -342,5 +339,3 @@ extern const struct _mp_obj_module_t ble_module;
 #include <alloca.h>
 
 #define MICROPY_PIN_DEFS_PORT_H "pin_defs_nrf5.h"
-
-#endif