[ovs-git] [openvswitch/ovs] 42a059: ip_gre: Remove even more unused code

[gvrose8192]

  Branch: refs/heads/master
  Home:   https://github.com/openvswitch/ovs
  Commit: 42a059e02bf343787951be2824c579e1c9a26e12
      https://github.com/openvswitch/ovs/commit/42a059e02bf343787951be2824c579e1c9a26e12
  Author: Greg Rose <gvrose8192 at gmail.com>
  Date:   2019-10-31 (Thu, 31 Oct 2019)

  Changed paths:
    M datapath/linux/compat/ip_gre.c

  Log Message:
  -----------
  ip_gre: Remove even more unused code

There is a confusing mix of ipgre and gretap functions with some
needed for gretap still having ipgre_ prefixes.  This time though
I think I got the rest of the unused ipgre code.

Fixes: d5822f428814 ("gre: Remove dead ipgre code")
Signed-off-by: Greg Rose <gvrose8192 at gmail.com>
Signed-off-by: Ben Pfaff <blp at ovn.org>