mx23evk: disable obsolete VIDEO config

DM_VIDEO conversion deadline has passed, disable VIDEO config.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
diff --git a/configs/mx23evk_defconfig b/configs/mx23evk_defconfig
index a5f7cc7..73d7e9b 100644
--- a/configs/mx23evk_defconfig
+++ b/configs/mx23evk_defconfig
@@ -37,7 +37,7 @@
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
-CONFIG_VIDEO=y
+# CONFIG_VIDEO is not set
 CONFIG_SPLASH_SCREEN=y
 CONFIG_VIDEO_BMP_GZIP=y
 CONFIG_VIDEO_BMP_RLE8=y