src: Get rid of duplicated includes

Change-Id: I252a1cd77bf647477edb7dddadb7e527de872439
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29582
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/lib/prog_loaders.c

@@ -29,7 +29,6 @@
 #include <stage_cache.h>
 #include <symbols.h>
 #include <timestamp.h>
-#include <cbfs.h>
 #include <fit_payload.h>
 
 /* Only can represent up to 1 byte less than size_t. */