remove accidental define
@@ -8,8 +8,6 @@ terms of the MIT license. A copy of the license can be found in the file
#define _DEFAULT_SOURCE // ensure mmap flags are defined
#endif
-#define MI_USE_SBRK
-
#if defined(__sun)
// illumos provides new mman.h api when any of these are defined
// otherwise the old api based on caddr_t which predates the void pointers one.
