examples/embedding: Fix build with updated sys and os modules.

Signed-off-by: Damien George <damien@micropython.org>

examples/embedding/Makefile.upylib

@@ -137,7 +137,6 @@ SRC_C = $(addprefix ports/unix/,\
 	unix_mphal.c \
 	input.c \
 	modmachine.c \
-	modos.c \
 	moduselect.c \
 	alloc.c \
 	coverage.c \

examples/embedding/mpconfigport_minimal.h

@@ -75,21 +75,18 @@
 #define MICROPY_PY_SYS_EXIT         (0)
 #define MICROPY_PY_SYS_PLATFORM     "linux"
 #define MICROPY_PY_SYS_MAXSIZE      (0)
+#define MICROPY_PY_SYS_PATH_DEFAULT ".frozen"
 #define MICROPY_PY_SYS_STDFILES     (0)
 #define MICROPY_PY_CMATH            (0)
 #define MICROPY_PY_UCTYPES          (0)
 #define MICROPY_PY_UZLIB            (0)
 #define MICROPY_PY_UJSON            (0)
+#define MICROPY_PY_UOS              (1)
 #define MICROPY_PY_URE              (0)
 #define MICROPY_PY_UHEAPQ           (0)
 #define MICROPY_PY_UHASHLIB         (0)
 #define MICROPY_PY_UBINASCII        (0)
 
-extern const struct _mp_obj_module_t mp_module_os;
-
-#define MICROPY_PORT_BUILTIN_MODULES \
-    { MP_ROM_QSTR(MP_QSTR_uos), MP_ROM_PTR(&mp_module_os) }, \
-
 #define MICROPY_PORT_ROOT_POINTERS \
 
 //////////////////////////////////////////