video: Drop references to CONFIG_VIDEO et al

Drop the Kconfigs which are not used and all references to them. In
particular, this drops CONFIG_VIDEO to avoid confusion and allow us to
eventually rename CONFIG_DM_VIDEO to CONFIG_VIDEO.

Also drop the prototype for video_get_info_str() which is no-longer used.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Jason Liu <jason.hui.liu@nxp.com>
diff --git a/cmd/bmp.c b/cmd/bmp.c
index 071ba90..45f4c12 100644
--- a/cmd/bmp.c
+++ b/cmd/bmp.c
@@ -268,10 +268,8 @@
 	}
 #elif defined(CONFIG_LCD)
 	ret = lcd_display_bitmap(addr, x, y);
-#elif defined(CONFIG_VIDEO)
-	ret = video_display_bitmap(addr, x, y);
 #else
-# error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
+# error bmp_display() requires CONFIG_LCD
 #endif
 
 	if (bmp_alloc_addr)