PM: remove obsolete ALARM, PAUSE, TIMES calls

NetBSD libc implements these as wrappers around setitimer(2),
sigsuspend(2), and getrusage(2), respectively.

Change-Id: I0c5e725b3e1316bddd3a3ff7ef65d57d30afd10d

lib/libc/gen/minix/times.c

@@ -1,22 +0,0 @@
-#include <sys/cdefs.h>
-#include "namespace.h"
-
-#include <lib.h>
-#include <sys/times.h>
-
-#ifdef __weak_alias
-__weak_alias(times, _times)
-#endif
-
-clock_t times(struct tms *buf)
-{
-  message m;
-
-  m.m4_l5 = 0;			/* return this if system is pre-1.6 */
-  if (_syscall(PM_PROC_NR, TIMES, &m) < 0) return( (clock_t) -1);
-  buf->tms_utime = m.m4_l1;
-  buf->tms_stime = m.m4_l2;
-  buf->tms_cutime = m.m4_l3;
-  buf->tms_cstime = m.m4_l4;
-  return(m.m4_l5);
-}

lib/libc/gen/times.c

@@ -90,3 +90,7 @@ times(struct tms *tp)
 		return ((clock_t)-1);
 	return ((clock_t)(CONVTCK(t)));
 }
+
+#if defined(__minix) && defined(__weak_alias)
+__weak_alias(times, _times)
+#endif