Don't declare read or write.

src/libraries/libisc-new/src/isc_session.c

@@ -37,8 +37,6 @@
 /*extern void *memset(void *, int, int);*/
 extern int close(int);
 extern time_t time(time_t *);
-extern int read(int fd, char *buf, int len);
-extern int write(int, char *, int);