t_misc: reformat timings tests

Change-Id: Ib0ef828186cb32e12ae5bb3637af2f23bda15e32
Reviewed-on: http://review.couchbase.org/42544
Tested-by: Mark Nunberg <mnunberg@haskalah.org>
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>