x86: samus: Drop EFI_LOADER

This adds a lot of code so that it cannot be built with the binary
blobs. It is not used on this board. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/chromebook_samus_defconfig b/configs/chromebook_samus_defconfig
index b933a23..0d20891 100644
--- a/configs/chromebook_samus_defconfig
+++ b/configs/chromebook_samus_defconfig
@@ -84,3 +84,4 @@
 CONFIG_FRAMEBUFFER_VESA_MODE_11A=y
 CONFIG_TPM=y
 # CONFIG_GZIP is not set
+# CONFIG_EFI_LOADER is not set