[nfc] remove legacy libc header line in Windows config.h

The last use of this macro was removed in
70a4ec52014697210369c6c66c9af7d72579fdc9. Graphviz has been compiled with C99
since fe3f9411d2c59b463ab1b64eecfd19f2db55d2fc, under which standard C headers
are required to exist.

diff --git a/windows/include/config.h b/windows/include/config.h
index 4c4ca40f3f8c13bf4502ab31fbf8a52c9d4bbc39..40a505a6be7b03accd2cf9cf203ea0ffb0c7e2b2 100644 (file)
--- a/windows/include/config.h
+++ b/windows/include/config.h
@@ -263,9 +263,6 @@
 /* Define if you want SMYRNA */
 /* #undef SMYRNA */
 
-/* Define to 1 if you have the ANSI C header files. */
-#define STDC_HEADERS 1
-
 /* Define if you want CGRAPH */
 #define WITH_CGRAPH 1