Actually allow setting _SIMPLE_IO manually

Wuerfel21 · Wuerfel21 · commit 1138e15c0657 · 2026-04-16T17:10:03.000+02:00
diff --git a/include/libsys/fmt.h b/include/libsys/fmt.h
@@ -9,7 +9,7 @@
 #include <errno.h>
 
 #define INCLUDE_FLOATS
-#undef _SIMPLE_IO
+//#undef _SIMPLE_IO
 
 #ifdef __FLEXC__
 
