RT3546: Remove #define IRIX_CC_BUG

Leftovers from commit 448155e9
Remove now-unused #define's
Reviewed-by: NMatt Caswell <matt@openssl.org>

e_os.h

@@ -626,13 +626,6 @@ extern char *sys_errlist[]; extern int sys_nerr;
 
 /***********************************************/
 
-#ifdef sgi
-#define IRIX_CC_BUG	/* all version of IRIX I've tested (4.* 5.*) */
-#endif
-#ifdef OPENSSL_SYS_SNI
-#define IRIX_CC_BUG	/* CDS++ up to V2.0Bsomething suffered from the same bug.*/
-#endif
-
 #if defined(OPENSSL_SYS_WINDOWS)
 #  define strcasecmp _stricmp
 #  define strncasecmp _strnicmp