remove bot-key package

It was only used in a local test and the same functionality can
be accomplished in the next Gluon version by setting
`siteconfig.authorized_keys`.

ffpb/ffpb-key/Makefile

-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=ffpb-key
-PKG_VERSION:=1
-PKG_RELEASE:=$(GLUON_VERSION).$(GLUON_SITE_CODE)-$(GLUON_RELEASE).$(GLUON_CONFIG_VERSION)
-
-PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
-
-include $(INCLUDE_DIR)/package.mk
-
-define Package/ffpb-key
-  SECTION:=ffpb
-  CATEGORY:=ffpb
-  TITLE:=Status-Bot Koy
-  DEPENDS:=+dropbear
-endef
-
-define Package/ffpb-key/description
-	Setups the status bot key (SSH).
-endef
-
-define Build/Prepare
-	mkdir -p $(PKG_BUILD_DIR)
-endef
-
-define Build/Configure
-endef
-
-define Build/Compile
-endef
-
-define Package/ffpb-key/install
-	$(CP) ./files/* $(1)/
-endef
-
-$(eval $(call BuildPackage,ffpb-key))

ffpb/ffpb-key/files/etc/dropbear/authorized_keys

-ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDJfsG/myO4y9WzJSP+ixluHFmkIMJJRsvRT8t5h4y/5A7QzovOw1GpCmWJWnZ6GKXilTxb8ycqVfDcFPB2NRkdJUjYL+v4IMriPeBigAjc6FoUZXOS3TOZVhaTlNT4XxXKOYF/Rpgscv5f0iu1SG0Tp4mb2TX04pZjbnLNBABbjn592abEuMG5bH/g9odi50S0MoU/qCH9AZvkoc8vGu+flOBrKfFi+7g2GxF/w66mMvCJfK27QFSPOiFV3CT6ZfSZM138OCdC1SOi89X9+oCEQ3LB9A+bJgyYnxqp8eVpRPui6K9sPkax71tMimRJA5Xgdvqt9HpcgtNYxKJ4gYMR ffpb-statusbot
-

[Stefan Laudemann]

For the sake of completeness: Realized through the 'gluon-authorized-keys' package (commit: 318cb29a0a6a985feabd7ddf69c13d567827443b)