(mktime): Comment out everything, since it is unused.

src/libraries/libansi/mktime.c

+#if 0
+/* mktime is no longer used in LysKOM. This fact was discovered by
+   ceder 1993-10-02. */
 #include <time.h>
 
 /*
@@ -22,3 +25,4 @@ mktime (const struct tm  * temeptr )
 			     + 60 * ( temeptr->tm_hour 
 				     + 24 * ndays )));
 }
+#endif