mox-uboot: remove package

replaced by mox-a53-firmware in 72919fc3

hardware/mox/mox-uboot/Makefile

-#
-## Copyright (C) 2018-2021 CZ.NIC z.s.p.o. (https://www.nic.cz/)
-#
-## This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-# #
-#
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=mox-uboot
-PKG_VERSION:=2021-04-rc1
-PKG_RELEASE:=$(AUTORELEASE)
-
-PKG_SOURCE_PROTO:=git
-PKG_SOURCE_URL:=https://gitlab.nic.cz/turris/mox-boot-builder.git
-PKG_MIRROR_HASH:=960e37c522a48d994b4ee99a2f039ccd3dc26fda1e17027929c90bab344844f1
-PKG_SOURCE_VERSION:=b8928b294a863f2c698c4b230e598f984828a2ad
-
-PKG_MAINTAINER:=CZ.NIC <packaging@turris.cz>
-PKG_LICENSE:=GPL-2.0-or-later
-PKG_LICENSE_FILES:=README
-
-include $(INCLUDE_DIR)/package.mk
-
-define Package/mox-uboot
-  TITLE:=U-boot for Turris MOX
-  DEPENDS:=@TARGET_mvebu_cortexa53_DEVICE_cznic_turris-mox
-  PROVIDES:=u-boot-mox
-endef
-
-define Build/Compile
-	cd $(PKG_BUILD_DIR); make CROSS_COMPILE=$(TARGET_CROSS) a53-firmware.bin
-endef
-
-define Package/mox-uboot/install
-	$(INSTALL_DIR) $(1)/usr/share/mox
-	$(INSTALL_DATA) $(PKG_BUILD_DIR)/a53-firmware.bin $(1)/usr/share/mox/uboot-devel
-endef
-
-$(eval $(call BuildPackage,mox-uboot))