colibri-imx6ull: drop vidargs and remove video= settings

Since we envision using overlays for display interfaces, the video=
settings within vidargs are obsolete. Remove these settings from the
U-Boot.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
diff --git a/include/configs/colibri-imx6ull.h b/include/configs/colibri-imx6ull.h
index 53bfab4..281815e 100644
--- a/include/configs/colibri-imx6ull.h
+++ b/include/configs/colibri-imx6ull.h
@@ -123,9 +123,7 @@
 		"${board}/flash_blk.img && source ${loadaddr}\0" \
 	"splashpos=m,m\0" \
 	"splashimage=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
-	"videomode=video=ctfb:x:640,y:480,depth:18,pclk:39722,le:48,ri:16,up:33,lo:10,hs:96,vs:2,sync:0,vmode:0\0" \
-	"vidargs=video=mxsfb:640x480M-16@60"
-
+	"videomode=video=ctfb:x:640,y:480,depth:18,pclk:39722,le:48,ri:16,up:33,lo:10,hs:96,vs:2,sync:0,vmode:0\0"
 
 /* Physical Memory Map */
 #define PHYS_SDRAM			MMDC0_ARB_BASE_ADDR