staging: cxt1e1: remove unnecessary function, VMETRO_TRACE

VMETRO_TRACE isn't called from anywhere. So delete it.

Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>