Revert commit 191628e ("mmc: mmci: Set PROBE_PREFER_ASYNCHRONOUS")

This temporary reverts commit 191628e ("mmc: mmci: Set
PROBE_PREFER_ASYNCHRONOUS")
due to incompatibility with current version of PINCTRL driver.
Once PINCTRL driver is updated, we'll repush this commit

Signed-off-by: Patrice GUILEMOND <patrice.guilemond-ext@st.com>

Change-Id: Id01541e736b659612cb750f55e7816ff18288487
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/linux-stm32/+/327320
Reviewed-by: Antonio Maria BORNEO <antonio.borneo@foss.st.com>
Tested-by: Antonio Maria BORNEO <antonio.borneo@foss.st.com>
ACI: CITOOLS <MDG-smet-aci-reviews@list.st.com>
Reviewed-by: Christophe KERELLO <christophe.kerello@st.com>
Tested-by: Patrice GUILEMOND <patrice.guilemond-ext@st.com>
Reviewed-by: Patrice GUILEMOND <patrice.guilemond-ext@st.com>
Domain-Review: Christophe KERELLO <christophe.kerello@st.com>

drivers/mmc/host/mmci.c

@@ -2383,7 +2383,6 @@ static struct amba_driver mmci_driver = {
 	.drv		= {
 		.name	= DRIVER_NAME,
 		.pm	= &mmci_dev_pm_ops,
-		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 	},
 	.probe		= mmci_probe,
 	.remove		= mmci_remove,