efi-x86_payload: Remove empty config header

Now that we support having CONFIG_SYS_CONFIG_NAME be unset to indicate a
lack of board.h file, unset this on the efi-x86_payload* platforms and remove
the otherwise empty file.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/efi/efi-x86_payload/Kconfig b/board/efi/efi-x86_payload/Kconfig
index 6d06249..c500ca0 100644
--- a/board/efi/efi-x86_payload/Kconfig
+++ b/board/efi/efi-x86_payload/Kconfig
@@ -9,9 +9,6 @@
 config SYS_SOC
 	default "efi"
 
-config SYS_CONFIG_NAME
-	default "efi-x86_payload"
-
 config TEXT_BASE
 	default 0x00200000
 
diff --git a/board/efi/efi-x86_payload/MAINTAINERS b/board/efi/efi-x86_payload/MAINTAINERS
index d795d60..3c5d48a 100644
--- a/board/efi/efi-x86_payload/MAINTAINERS
+++ b/board/efi/efi-x86_payload/MAINTAINERS
@@ -3,6 +3,5 @@
 S:	Maintained
 F:	board/efi/Kconfig
 F:	board/efi/efi-x86_payload/
-F:	include/configs/efi-x86_payload.h
 F:	configs/efi-x86_payload32_defconfig
 F:	configs/efi-x86_payload64_defconfig
diff --git a/include/configs/efi-x86_payload.h b/include/configs/efi-x86_payload.h
deleted file mode 100644
index e00c408..0000000
--- a/include/configs/efi-x86_payload.h
+++ /dev/null
@@ -1,4 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
- */