witherspoon: Remove broken u-boot patch

This u-boot patch was breaking the build.

The configuration is provided by u-boot and no longer needs to be
patched.

Change-Id: I736d0392ee82241d8cf94ee7abce14252d976883
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/meta-witherspoon/recipes-bsp/u-boot/files/0001-Witherspoon-OpenBMC-configuration.patch b/meta-witherspoon/recipes-bsp/u-boot/files/0001-Witherspoon-OpenBMC-configuration.patch
deleted file mode 100644
index e09f846..0000000
--- a/meta-witherspoon/recipes-bsp/u-boot/files/0001-Witherspoon-OpenBMC-configuration.patch
+++ /dev/null
@@ -1,29 +0,0 @@
-From 809f469b92b9f2248a49f250bc002de0c6bd48f5 Mon Sep 17 00:00:00 2001
-From: Brad Bishop <bradleyb@fuzziesquirrel.com>
-Date: Wed, 8 Jun 2016 14:57:23 -0400
-Subject: [PATCH] Witherspoon OpenBMC configuration
-
-Set default boot arguments for OpenBMC.
-
-Signed-off-by: Brad Bishop <bradleyb@us.ibm.com>
----
- include/configs/witherspoon-bmc.h | 3 +++
- 1 file changed, 3 insertions(+)
-
-diff --git a/include/configs/witherspoon-bmc.h b/include/configs/witherspoon-bmc.h
-index f9da307..f0f0ba9 100644
---- a/include/configs/witherspoon-bmc.h
-+++ b/include/configs/witherspoon-bmc.h
-@@ -91,6 +91,9 @@
- 
- #define CONFIG_SYS_LOAD_ADDR		0x83000000	/* default load address */
- 
-+#define CONFIG_BOOTARGS		"console=ttyS4,115200 earlyprintk"
-+#define CONFIG_BOOTCOMMAND	"bootm 20080000 20300000"
-+
- #define CONFIG_AST_SPI_NOR    /* AST SPI NOR Flash */
- 
- #define CONFIG_FMC_CS			1
--- 
-2.1.4
-
diff --git a/meta-witherspoon/recipes-bsp/u-boot/u-boot_%.bbappend b/meta-witherspoon/recipes-bsp/u-boot/u-boot_%.bbappend
deleted file mode 100644
index 9db981f..0000000
--- a/meta-witherspoon/recipes-bsp/u-boot/u-boot_%.bbappend
+++ /dev/null
@@ -1,2 +0,0 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
-SRC_URI += "file://0001-Witherspoon-OpenBMC-configuration.patch"