package infra: drop non-IPv6 support

Now that IPv6 is mandatory remove support for non-IPv6 tweaks/variables
in the package infra.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Makefile.in

@@ -369,12 +369,6 @@ else
 DISABLE_NLS :=--disable-nls
 endif
 
-ifeq ($(BR2_INET_IPV6),y)
-DISABLE_IPV6 = --enable-ipv6
-else
-DISABLE_IPV6 = --disable-ipv6
-endif
-
 ifneq ($(BR2_INSTALL_LIBSTDCPP),y)
 TARGET_CONFIGURE_OPTS += CXX=false
 endif

package/pkg-autotools.mk

@@ -200,8 +200,8 @@ define $(2)_CONFIGURE_CMDS
 		--with-xmlto=no \
 		--with-fop=no \
 		--disable-dependency-tracking \
+		--enable-ipv6 \
 		$$(DISABLE_NLS) \
-		$$(DISABLE_IPV6) \
 		$$(ENABLE_DEBUG) \
 		$$(SHARED_STATIC_LIBS_OPTS) \
 		$$(QUIET) $$($$(PKG)_CONF_OPTS) \