K 10
svn:author
V 7
git2svn
K 8
svn:date
V 27
2022-07-29T18:50:53.343682Z
K 7
svn:log
V 555
Fix unused variable warning in usb's atp.c

With clang 15, the following -Werror warning is produced:

    sys/dev/usb/input/atp.c:2018:11: error: variable 'n_vertical_scrolls' set but not used [-Werror,-Wunused-but-set-variable]
            u_int8_t n_vertical_scrolls = 0;
                     ^

The 'n_vertical_scrolls' variable is no longer used after 197b9a2ef003,
so remove it.

MFC after:	3 days

(cherry picked from commit b621f3cf2d2c30880c49afe37598e0f550afb181)

Git Hash:   d39a69e62809915744c4b0a0566ca3d3b0694bb0
Git Author: dim@FreeBSD.org
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