include/video.h: Remove declaration of functions that don't exist.

video_init, video_putc and video_puts functions are not implemented
anywhere, remove their declaration from the header.

Signed-off-by: Liviu Dudau <liviu.dudau@foss.arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/include/video.h b/include/video.h
index ddc2eeb..e7fc5c9 100644
--- a/include/video.h
+++ b/include/video.h
@@ -198,12 +198,6 @@
 
 /* Video functions */
 
-struct stdio_dev;
-
-int	video_init(void *videobase);
-void	video_putc(struct stdio_dev *dev, const char c);
-void	video_puts(struct stdio_dev *dev, const char *s);
-
 /**
  * Display a BMP format bitmap on the screen
  *