lib: remove assets infrastructure

Now that only CBFS access is supported for finding resources
within the boot media the assets infrastructure can be removed.
Remove it.

BUG=chromium:445938
BRANCH=None
TEST=Built and ran on glados.

Change-Id: I383fd6579280cf9cfe5a18c2851baf74cad004e9
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/12690
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/soc/intel/baytrail/refcode.c b/src/soc/intel/baytrail/refcode.c
index 3a72a8f..a5946bc 100644
--- a/src/soc/intel/baytrail/refcode.c
+++ b/src/soc/intel/baytrail/refcode.c
@@ -45,7 +45,7 @@
 static efi_wrapper_entry_t load_reference_code(void)
 {
 	struct prog prog =
-		PROG_INIT(ASSET_REFCODE, CONFIG_CBFS_PREFIX "/refcode");
+		PROG_INIT(PROG_REFCODE, CONFIG_CBFS_PREFIX "/refcode");
 	struct rmod_stage_load refcode = {
 		.cbmem_id = CBMEM_ID_REFCODE,
 		.prog = &prog,