yamonenv: Remove dead URLs

uscan errors on the URL as it is no longer available.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

package/boot/yamonenv/Makefile

@@ -12,7 +12,7 @@ PKG_VERSION:=20051022
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)_gruen.4g__$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=http://downloads.openwrt.org/sources/
+PKG_SOURCE_URL:=https://downloads.openwrt.org/sources
 PKG_HASH:=466eca9cdad2c15e957fb9ce7d0b6927ecd17d85c4cc2dff37e97a3e6b209c67
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)
@@ -27,7 +27,6 @@ define Package/yamonenv
   SUBMENU:=Boot Loaders
   DEPENDS:=@TARGET_au1000
   TITLE:=YAMON configuration utility
-  URL:=http://meshcube.org/nylon/stable/sources/
   MAINTAINER:=Florian Fainelli <florian@openwrt.org>
 endef