test_push: temporatily disable the push

There is a bug in the push method, temporatily disable it.

BUG=None
TEST=None

Change-Id: I3fbfa644b63727f6a21f24299986df723178ca9d
Reviewed-on: https://chromium-review.googlesource.com/412942
Reviewed-by: Shuqian Zhao <shuqianz@chromium.org>
Tested-by: Shuqian Zhao <shuqianz@chromium.org>
diff --git a/site_utils/test_push.py b/site_utils/test_push.py
index 8f268f7..fa1ff65 100755
--- a/site_utils/test_push.py
+++ b/site_utils/test_push.py
@@ -622,7 +622,7 @@
         testbed_suite.join()
 
         # All tests pass, push prod-next branch for UPDATED_REPOS.
-        push_prod_next_branch(updated_repo_heads)
+        #push_prod_next_branch(updated_repo_heads)
     except Exception as e:
         print 'Test for pushing to prod failed:\n'
         print str(e)