git: mk/crunchgen: Remove the unimplemented ${_+_}

[Aaron LI]

commit b316b9ce72d3ca0de07b830c2d2f3bbd235aa959
Author: Aaron LI <aly at aaronly.me>
Date:   Mon Jul 2 09:27:29 2018 +0800

    mk/crunchgen: Remove the unimplemented ${_+_}
    
    The ${_+_} make variable is introduced by FreeBSD in revision 133369,
    but we don't implement it, so remove it.

Summary of changes:
 share/mk/bsd.crunchgen.mk | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/b316b9ce72d3ca0de07b830c2d2f3bbd235aa959


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