drivers: pinctrl: Do not confgure sleep pins in NXP MCI IOMUX driver

The sleep-output property is no longer used. This results in the sleep
bit to be always cleared. Delete this code so we can retain any sleep
mode configuration done.

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>

Author: mmahadevan108

drivers/pinctrl/pinctrl_mci_io_mux.c

@@ -59,13 +59,6 @@ static void configure_pin_props(uint32_t pin_mux, uint8_t gpio_idx)
 	/* Set slew rate */
 	set = IOMUX_PAD_GET_SLEW(pin_mux) << ((gpio_idx & 0xF) << 1);
 	*slew_reg = (*slew_reg & ~mask) | set;
-
-	/* Set sleep force enable bit */
-	mask = (0x1 << (gpio_idx & 0x1F));
-	set = (IOMUX_PAD_GET_SLEEP_FORCE_EN(pin_mux) << (gpio_idx & 0x1F));
-	*sleep_force_en = (*sleep_force_en & ~mask) | set;
-	set = (IOMUX_PAD_GET_SLEEP_FORCE_VAL(pin_mux) << (gpio_idx & 0x1F));
-	*sleep_force_val = (*sleep_force_val & ~mask) | set;
 }
 
 static void select_gpio_mode(uint8_t gpio_idx)