git: <net/if_var.h>: Clean up unused forward declaration

[Aaron LI]

commit 03d44125d13c9b84745fca401c1fd8cefd5db97b
Author: Aaron LI <aly at aaronly.me>
Date:   Tue Mar 20 16:15:42 2018 +0800

    <net/if_var.h>: Clean up unused forward declaration
    
    Also remove the inclusion of an unnecessary header <sys/systm.h>.

Summary of changes:
 sys/net/if_var.h | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/03d44125d13c9b84745fca401c1fd8cefd5db97b


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