mmc: core: remove check of host->removed for rescan routine

The intention of this check was to prevent the conflict between
hotplug and removing driver for whatever reason. Currently it
doesn't improve anything and the following rescan process could
still saftly perform the scan flow. So these code seems pointless
now and let's remove them.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/core/core.c

@@ -1769,13 +1769,6 @@ void mmc_detach_bus(struct mmc_host *host)
 static void _mmc_detect_change(struct mmc_host *host, unsigned long delay,
 				bool cd_irq)
 {
-#ifdef CONFIG_MMC_DEBUG
-	unsigned long flags;
-	spin_lock_irqsave(&host->lock, flags);
-	WARN_ON(host->removed);
-	spin_unlock_irqrestore(&host->lock, flags);
-#endif
-
 	/*
 	 * If the device is configured as wakeup, we prevent a new sleep for
 	 * 5 s to give provision for user space to consume the event.
@@ -2646,12 +2639,6 @@ void mmc_start_host(struct mmc_host *host)
 
 void mmc_stop_host(struct mmc_host *host)
 {
-#ifdef CONFIG_MMC_DEBUG
-	unsigned long flags;
-	spin_lock_irqsave(&host->lock, flags);
-	host->removed = 1;
-	spin_unlock_irqrestore(&host->lock, flags);
-#endif
 	if (host->slot.cd_irq >= 0) {
 		if (host->slot.cd_wake_enabled)
 			disable_irq_wake(host->slot.cd_irq);