stmhal: Remove obsolete #defines from mpconfigport.h.

Either not needed anymore, or defined in the board/_hal_conf.h file.

stmhal/mpconfigport.h

@@ -38,14 +38,8 @@ typedef const void *machine_const_ptr_t; // must be of pointer size
 #define free gc_free
 #define realloc gc_realloc
 
-#define STM32F40_41xxx
-#define USE_STDPERIPH_DRIVER
 #define USE_DEVICE_MODE
 //#define USE_HOST_MODE
 
 // board specific definitions
 #include "mpconfigboard.h"
-
-#if !defined(HSE_VALUE)
-#define HSE_VALUE (8000000)
-#endif