package/libubox: cleanup dependencies

host-pkgconf is already a (runtime) dependency for host-cmake.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libubox/libubox.mk

@@ -8,7 +8,7 @@ LIBUBOX_VERSION = 5a0bbefc8fa440446253b171d0ac038d839360e3
 LIBUBOX_SITE = git://nbd.name/luci2/libubox.git
 LIBUBOX_LICENSE = LGPLv2.1, GPLv2, BSD-3c, MIT
 LIBUBOX_INSTALL_STAGING = YES
-LIBUBOX_DEPENDENCIES = host-pkgconf $(if $(BR2_PACKAGE_JSON_C),json-c)
+LIBUBOX_DEPENDENCIES = $(if $(BR2_PACKAGE_JSON_C),json-c)
 
 ifeq ($(BR2_USE_MMU)$(BR2_PACKAGE_LUA_5_1),yy)
 LIBUBOX_DEPENDENCIES += lua