Revert "phc2sys: Notify kernel if clock is not in sync"

This novel use of the STA_UNSYNC flag breaks with the established,
traditional meaning of that flag, which is:

   The clock has is believed to have an error larger than 16 seconds.

This reverts commit 944f5f7ac6.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>

clockadj.c

@@ -182,14 +182,3 @@ void sysclk_set_sync(void)
 	if (clock_adjtime(clkid, &tx) < 0)
 		pr_err("failed to set clock status and maximum error: %m");
 }
-
-void sysclk_set_unsync(void)
-{
-	clockid_t clkid = CLOCK_REALTIME;
-	struct timex tx;
-	memset(&tx, 0, sizeof(tx));
-	tx.modes = ADJ_STATUS;
-	tx.status = STA_UNSYNC;
-	if (clock_adjtime(clkid, &tx) < 0)
-		pr_err("failed to set clock status: %m");
-}

clockadj.h

@@ -80,9 +80,4 @@ int sysclk_max_freq(void);
  * the real-time clock (RTC) to it.
  */
 void sysclk_set_sync(void);
-
-/**
- * Mark the system clock as unsynchronized.
- */
-void sysclk_set_unsync(void);
 #endif

phc2sys.c

@@ -735,10 +735,8 @@ static int do_loop(struct node *node, int subscriptions)
 				reconfigure(node);
 			}
 		}
-		if (!node->master) {
+		if (!node->master)
-			sysclk_set_unsync();
 			continue;
-		}
 
 		LIST_FOREACH(clock, &node->dst_clocks, dst_list) {
 			if (!update_needed(clock))