Change: I3bbcc5b9f8a4da2fcdb9f6f70913c2d6bc6e2b9b
added some timing messages around the volume operations in
exercises/volumes.sh. This was a good idea, but some
useless timing info was added to failed cases, this patch
pulls that back out. The only parameter used to detect
failure is a timeout, so outputing the time elapses in
these cases is useless.
Change-Id: I609a803a7293aa8a8e3cec186984de59bfe9b409