Remove __STDC__ obsolete define (used for pre C88 code)

src/jrd/cdefs.h

@@ -73,36 +73,12 @@
  * __XSTRING is like __STRING, but it expands any macros in its argument
  * first.  It is only available with ANSI C.
  */
-#if defined(__STDC__) || defined(__cplusplus)
 #define	__P(protos)	protos		/* full-blown ANSI C */
 #define	__CONCAT1(x,y)	x ## y
 #define	__CONCAT(x,y)	__CONCAT1(x,y)
 #define	__STRING(x)	#x			/* stringify without expanding x */
 #define	__XSTRING(x)	__STRING(x)	/* expand x, then stringify */
 
-#else /* !(__STDC__ || __cplusplus) */
-#define	__P(protos)	()			/* traditional C preprocessor */
-#define	__CONCAT(x,y)	x/**/y
-#define	__STRING(x)	"x"
-
-#ifndef __GNUC__
-/*
- * In non-ANSI C environments, new programs will want ANSI-only C keywords
- * deleted from the program and old programs will want them left alone.
- * When using a compiler other than gcc, programs using the ANSI C keywords
- * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
- * When using "gcc -traditional", we assume that this is the intent; if
- * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
- */
-#ifndef	NO_ANSI_KEYWORDS
-#define	const					/* delete ANSI C keywords */
-#define	inline
-#define	signed
-#define	volatile
-#endif /* !NO_ANSI_KEYWORDS */
-#endif /* !__GNUC__ */
-#endif /* !(__STDC__ || __cplusplus) */
-
 /*
  * Compiler-dependent macros to declare that functions take printf-like
  * or scanf-like arguments.  They are null except for versions of gcc