Remove extra printfs from uwrite

Missed some printfs in a test. This broke
the post processing of the test output.

BUG=chromium-os:37961
TEST=kernel_fs_Punybench --args=--disk

Change-Id: Ic4c6fedd787927cabe9a18b6965e5c9202975810
Reviewed-on: https://gerrit.chromium.org/gerrit/41464
Tested-by: Paul Taysom <taysom@chromium.org>
Reviewed-by: Luigi Semenzato <semenzato@chromium.org>
Commit-Queue: Paul Taysom <taysom@chromium.org>
1 file changed