u-boot: Remove upstreamed U-Boot rpi0w defconfig patch

[Issue #239] -- https://github.com/agherzan/meta-raspberrypi/issues/239

The patch 0002-rpi_0_w-Add-configs-consistent-with-RpI3.patch has been
applied to the upstream U-Boot repo and is now in the release that
openembedded-core uses so remove it from meta-raspberrypi's U-Boot
bbappend.

Signed-off-by: Jonathan Haigh <jonathan.haigh@arm.com>

recipes-bsp/u-boot/u-boot/0002-rpi_0_w-Add-configs-consistent-with-RpI3.patch

@@ -1,41 +0,0 @@
-From 5d113dc0130ea2ea9faaa000fba9c737266b9747 Mon Sep 17 00:00:00 2001
-From: Drew Moseley <drew.moseley@northern.tech>
-Date: Fri, 9 Feb 2018 18:10:09 -0500
-Subject: [PATCH] rpi_0_w: Add configs consistent with RpI3
-
-Upstream-Status: Accepted [https://patchwork.ozlabs.org/patch/856572/]
-
-Signed-off-by: Drew Moseley <drew.moseley@northern.tech>
----
- configs/rpi_0_w_defconfig | 7 +++++++
- 1 file changed, 7 insertions(+)
-
-diff --git a/configs/rpi_0_w_defconfig b/configs/rpi_0_w_defconfig
-index 9a6d24b..1248294 100644
---- a/configs/rpi_0_w_defconfig
-+++ b/configs/rpi_0_w_defconfig
-@@ -12,14 +12,21 @@ CONFIG_SYS_PROMPT="U-Boot> "
- CONFIG_CMD_GPIO=y
- CONFIG_CMD_MMC=y
- CONFIG_CMD_USB=y
-+CONFIG_OF_EMBED=y
-+CONFIG_ENV_FAT_INTERFACE="mmc"
-+CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
-+CONFIG_DM_KEYBOARD=y
- CONFIG_DM_MMC=y
- CONFIG_MMC_SDHCI=y
- CONFIG_MMC_SDHCI_BCM2835=y
- CONFIG_DM_ETH=y
- CONFIG_USB=y
- CONFIG_DM_USB=y
-+CONFIG_USB_DWC2=y
- CONFIG_USB_STORAGE=y
- CONFIG_USB_KEYBOARD=y
-+CONFIG_USB_HOST_ETHER=y
-+CONFIG_USB_ETHER_SMSC95XX=y
- CONFIG_DM_VIDEO=y
- CONFIG_SYS_WHITE_ON_BLACK=y
- CONFIG_CONSOLE_SCROLL_LINES=10
--- 
-2.7.4
-

recipes-bsp/u-boot/u-boot_%.bbappend

@@ -1,7 +1 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/u-boot:"
-
-SRC_URI_append_rpi = " \
-    file://0002-rpi_0_w-Add-configs-consistent-with-RpI3.patch \
-"
-
 DEPENDS_append_rpi = " rpi-u-boot-scr"