Revert "wireless: Support of IFLA_INFO_KIND rtnl attribute"

Revert "wireless: Support of IFLA_INFO_KIND rtnl attribute"

This reverts commit bf38734c7a82c0e3cfe3afb97f20f92830671941.

Oliver reported that it breaks network-manager, for some reason with
this patch NM decides that the device isn't wireless but "generic"
(ethernet), sees no carrier (as expected with wifi) and fails to do
anything else with it.

Revert this to unbreak userspace.

Reported-by: Oliver Hartkopp <socketcan@hartkopp.net>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>