base-files: drop default setup for vconfig

base-files: drop default setup for vconfig

vconfig has been disabled by default since 2015 [1] and there are
no remaining uses in entire OpenWrt trunk. However, we still set up
a specific name_type for it during boot.

While this setup is properly implemented to be only triggered when
vconfig is present, it still seems anachronistic and unnecessary
to set up a standard for a tool that is not used anymore.

Therefore, this removes the set_name_type initialization and leaves
it for those people actually using the tool to configure it as needed.

[1] 899a23227e55 ("busybox: improve applets & deprecate ifconfig, route")

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>