mmc: sdhci-msm: Remove MMC_CAP2_ASYNC_SDIO_IRQ_4BIT_MODE capability

This removes direct enabling of MMC_CAP2_ASYNC_SDIO_IRQ_4BIT_MODE
capability from sdhci-msm driver.
This capablity needs to be enabled based on reading HOST_CAPABILITIES
register.

Change-Id: I74c2877d5906ee9e2180fdb8d50167af6d03b3af
Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 561bb97..7de8486 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -4029,7 +4029,6 @@
 	msm_host->mmc->caps2 |= msm_host->pdata->caps2;
 	msm_host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC;
 	msm_host->mmc->caps2 |= MMC_CAP2_FULL_PWR_CYCLE;
-	msm_host->mmc->caps2 |= MMC_CAP2_ASYNC_SDIO_IRQ_4BIT_MODE;
 	msm_host->mmc->caps2 |= MMC_CAP2_HS400_POST_TUNING;
 	msm_host->mmc->caps2 |= MMC_CAP2_CLK_SCALE;
 	msm_host->mmc->caps2 |= MMC_CAP2_SANITIZE;