busybox: drop providing virtual package ip

Drop providing the virtual package ip by busybox which was added in commit
1cec4d4ef0.

Letting busybox provide the virtual package ip is not optimal for the
following reasons :

	- Applications depending on ip expect either the ip-full or
	  ip-tiny package to be enabled.
	- Busybox ip applet cannot be added or removed at runtime

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

package/utils/busybox/Makefile

@@ -46,7 +46,6 @@ define Package/busybox
   URL:=http://busybox.net/
   DEPENDS:=+BUSYBOX_USE_LIBRPC:librpc +BUSYBOX_CONFIG_PAM:libpam +BUSYBOX_CONFIG_NTPD:jsonfilter
   MENU:=1
-  PROVIDES:=ip
   ALTERNATIVES:=\
     $(call BUSYBOX_IF_ENABLED,KILL,	100:/bin/kill:/bin/busybox) \
     $(call BUSYBOX_IF_ENABLED,PS,	100:/bin/ps:/bin/busybox) \