Remove testing as dependencie in skia_correctness
Remove testing as dependencie in skia_correctness

Removes testutils from non-test code. This caused the tes
ting package to be linked into skia_correctness.

BUG=skia:
TBR=borenet

Review URL: https://codereview.chromium.org/1740613004

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot