git: net/if_gre: unhook rip_ctlinput

[Roy Marples]

commit cf820092e2d4044f031e910092b20190a35b2252
Author: Roy Marples <roy at marples.name>
Date:   Tue Sep 10 14:32:54 2019 +0100

    net/if_gre: unhook rip_ctlinput
    
    It no longer exists, see prior commit.

Summary of changes:
 sys/net/gre/if_gre.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/cf820092e2d4044f031e910092b20190a35b2252


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