video: removal of VIDEO_BUFFER_POOL_SZ_MAX from Kconfig

Now that VIDEO_BUFFER_POOL_HEAP_SIZE is available is used
in all projects, VIDEO_BUFFER_POOL_SZ_MAX can be removed.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>

Author: Alain Volmat

drivers/video/Kconfig

@@ -23,10 +23,6 @@ config VIDEO_INIT_PRIORITY
 	help
 	  System initialization priority for video drivers.
 
-config VIDEO_BUFFER_POOL_SZ_MAX
-	int "Size of the largest buffer in the video pool"
-	default 1048576
-
 config VIDEO_BUFFER_POOL_HEAP_SIZE
 	int "Size in byte of the video buffer pool"
 	default 2097152