load.c: no need for conditional compilation;
`mrb_ro_data_p()` is available anyway.
MODIFY
src/load.c
src/load.c
@@ -606,12 +606,7 @@ read_irep(mrb_state *mrb, const uint8_t *bin, size_t bufsize, uint8_t flags)
static struct RProc*
mrb_proc_read_irep(mrb_state *mrb, const uint8_t *bin)
{
- /* MRB_LINK_TIME_RO_DATA_P is defined when predefined mrb_ro_data_p() is used */
-#if defined(MRB_LINK_TIME_RO_DATA_P) || defined(MRB_USE_CUSTOM_RO_DATA_P)
uint8_t flags = mrb_ro_data_p((char*)bin) ? FLAG_SRC_STATIC : FLAG_SRC_MALLOC;
-#else
- uint8_t flags = FLAG_SRC_STATIC;
-#endif
return read_irep(mrb, bin, (size_t)-1, flags);
}

load.c: no need for conditional compilation; #5547

`mrb_ro_data_p()` is available anyway.