mmc: host: omap-hsmmc: remove init_card pdata callback from pdata

Now as we have removed the last user (pandora_wl1251_init_card)
of this callback, we can remove it from the hsmmc code.

Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

include/linux/platform_data/hsmmc-omap.h

@@ -67,9 +67,6 @@ struct omap_hsmmc_platform_data {
 	/* string specifying a particular variant of hardware */
 	char *version;
 
-	/* if we have special card, init it using this callback */
-	void (*init_card)(struct mmc_card *card);
-
 	const char *name;
 	u32 ocr_mask;
 };