configs: mx7dsabresd: drop unused SDHC macro

With SPL_DM_MMC and DM_MMC, the two macros not needed, drop it.
 CONFIG_SYS_FSL_USDHC_NUM
 CONFIG_SYS_FSL_ESDHC_ADDR

Reviewed-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/include/configs/mx7dsabresd.h b/include/configs/mx7dsabresd.h
index d411b1a..aaad232 100644
--- a/include/configs/mx7dsabresd.h
+++ b/include/configs/mx7dsabresd.h
@@ -14,9 +14,6 @@
 
 #define CONFIG_MXC_UART_BASE            UART1_IPS_BASE_ADDR
 
-/* MMC Config*/
-#define CONFIG_SYS_FSL_ESDHC_ADDR       0
-
 #ifdef CONFIG_IMX_BOOTAUX
 /* Set to QSPI1 A flash at default */
 #define CONFIG_SYS_AUXCORE_BOOTDATA 0x60000000
@@ -111,12 +108,6 @@
 /* DMA stuff, needed for GPMI/MXS NAND support */
 #endif
 
-#ifdef CONFIG_NAND_MXS
-#define CONFIG_SYS_FSL_USDHC_NUM	1
-#else
-#define CONFIG_SYS_FSL_USDHC_NUM	2
-#endif
-
 /* USB Configs */
 #define CONFIG_MXC_USB_PORTSC  (PORT_PTS_UTMI | PORT_PTS_PTW)