Rename skimage expectations for renamed bot.

BUG=skia:

Review URL: https://codereview.chromium.org/436253004

expectations/skimage/Test-Ubuntu13.10-GCE-NoGPU-x86_64-Debug/expected-results.json

diff --git a/expectations/skimage/Test-Ubuntu13.10-ShuttleA-NoGPU-x86_64-Debug/expected-results.json b/expectations/skimage/Test-Ubuntu13.10-GCE-NoGPU-x86_64-Debug/expected-results.json
similarity index 100%
rename from expectations/skimage/Test-Ubuntu13.10-ShuttleA-NoGPU-x86_64-Debug/expected-results.json
rename to expectations/skimage/Test-Ubuntu13.10-GCE-NoGPU-x86_64-Debug/expected-results.json