mmc: drop unnecessary send_status request

It's redundant to send cmd13 after cmd9 whose response is not R1b. The
card devices will not be busy w/ cmd9.

Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>

drivers/mmc/mmc.c

@@ -1111,7 +1111,6 @@ static int mmc_startup(struct mmc *mmc)
 	struct mmc_cmd cmd;
 	ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
 	ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
-	int timeout = 1000;
 	bool has_parts = false;
 	bool part_completed;
 	struct blk_desc *bdesc;
@@ -1167,9 +1166,6 @@ static int mmc_startup(struct mmc *mmc)
 
 	err = mmc_send_cmd(mmc, &cmd, NULL);
 
-	/* Waiting for the ready status */
-	mmc_send_status(mmc, timeout);
-
 	if (err)
 		return err;