sfio: remove singular reference to `_BLD_stdio`

Remove the singular reference to `_BLD_stdio`.  This is part of a series
to remove unused build macros to unify on the CMake standard `*_EXPORTS`
macros.

diff --git a/lib/sfio/sfhdr.h b/lib/sfio/sfhdr.h
index a93eacc92608dac1d4dc2f5419b2402c82a87a1e..bc6de3cd5801dea952650d3fd185e5087c525cae 100644 (file)
--- a/lib/sfio/sfhdr.h
+++ b/lib/sfio/sfhdr.h
@@ -14,7 +14,7 @@ extern "C" {
 
 #ifndef _SFHDR_H
 #define _SFHDR_H       1
-#if !defined(_BLD_sfio) && !defined(_BLD_stdio)
+#if !defined(_BLD_sfio)
 #define _BLD_sfio      1
 #endif