warp7: Remove duplicated "mmc dev" command

The "mmc dev ${mmcdev}" command is done twice.

Remove one ocurrence to avoid the duplication.

Signed-off-by: Fabio Estevam <festevam@denx.de>
diff --git a/configs/warp7_bl33_defconfig b/configs/warp7_bl33_defconfig
index 3f91211..100f1c9 100644
--- a/configs/warp7_bl33_defconfig
+++ b/configs/warp7_bl33_defconfig
@@ -16,7 +16,7 @@
 CONFIG_FIT_SIGNATURE=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_USE_BOOTCOMMAND=y
-CONFIG_BOOTCOMMAND="mmc dev ${mmcdev};mmc dev ${mmcdev}; if mmc rescan; then run do_bootscript_hab;if run loadbootscript; then run bootscript; else if run loadimage; then run mmcboot; fi; fi; fi"
+CONFIG_BOOTCOMMAND="mmc dev ${mmcdev}; if mmc rescan; then run do_bootscript_hab;if run loadbootscript; then run bootscript; else if run loadimage; then run mmcboot; fi; fi; fi"
 # CONFIG_BOARD_EARLY_INIT_F is not set
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y