prebuilts_unittest: Temporary disable cyan test.

cyan test is broken due to temporary revert to address
crbug.com/730272, so disable the currently broken test until
cyan-paladin is re-enabled.

BUG=chromium:730272
TEST=run_tests; prebuilts_unittet

Change-Id: I77a5e4af56959ab4b7bcda24eb2ee7d37c720134
Reviewed-on: https://chromium-review.googlesource.com/526368
Commit-Queue: David Riley <davidriley@chromium.org>
Tested-by: David Riley <davidriley@chromium.org>
Trybot-Ready: David Riley <davidriley@chromium.org>
Reviewed-by: Hsu Wei-Cheng <mojahsu@chromium.org>
diff --git a/cbuildbot/prebuilts_unittest.py b/cbuildbot/prebuilts_unittest.py
index a04c03c..e242040 100644
--- a/cbuildbot/prebuilts_unittest.py
+++ b/cbuildbot/prebuilts_unittest.py
@@ -208,7 +208,9 @@
 
     # Provide a sample of private/public slave boards that are expected.
     public_slave_boards = ('amd64-generic', 'x86-generic')
-    private_slave_boards = ('cyan', 'samus', 'lumpy', 'daisy_spring')
+    # TODO: 20170606 temporarily removed cyan due to crbug.com/730272
+    #private_slave_boards = ('cyan', 'samus', 'lumpy', 'daisy_spring')
+    private_slave_boards = ('samus', 'lumpy', 'daisy_spring')
 
     self._VerifyResults(public_slave_boards=public_slave_boards,
                         private_slave_boards=private_slave_boards)