rockchip: jerry: Disable CONFIG_CONSOLE_SCROLL_LINES

The display on jerry is so fast that this option is not needed. Drop it so
that the display scrolls more smoothly.

Signed-off-by: Simon Glass <sjg@chromium.org>

configs/chromebook_jerry_defconfig

@@ -75,7 +75,6 @@ CONFIG_DISPLAY=y
 CONFIG_VIDEO_ROCKCHIP=y
 CONFIG_DISPLAY_ROCKCHIP_EDP=y
 CONFIG_DISPLAY_ROCKCHIP_HDMI=y
-CONFIG_CONSOLE_SCROLL_LINES=10
 CONFIG_USE_TINY_PRINTF=y
 CONFIG_CMD_DHRYSTONE=y
 CONFIG_ERRNO_STR=y