drivers/rtc: Remove redundant rtc_valid_tm() from rtc_resume()

rtc_read_time() has already judged valid tm by rtc_valid_tm(),
so just remove it.
Signed-off-by: NXunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1427945681-29972-17-git-send-email-john.stultz@linaro.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>

drivers/rtc/class.c

@@ -117,10 +117,6 @@ static int rtc_resume(struct device *dev)
 		return 0;
 	}
 
-	if (rtc_valid_tm(&tm) != 0) {
-		pr_debug("%s:  bogus resume time\n", dev_name(&rtc->dev));
-		return 0;
-	}
 	new_rtc.tv_sec = rtc_tm_to_time64(&tm);
 	new_rtc.tv_nsec = 0;