Remove hour from cts branch per build config

TEST=./suite_scheduler.py -t -f ../../suite_scheduler.ini
BUG=chromium:626006

Change-Id: Id0666b530e5df69f7113a9e2350da3869f872b41
Reviewed-on: https://chromium-review.googlesource.com/358382
Reviewed-by: Dan Shi <dshi@google.com>
Commit-Queue: Rohit Makasana <rohitbm@chromium.org>
Tested-by: Rohit Makasana <rohitbm@chromium.org>
diff --git a/suite_scheduler.ini b/suite_scheduler.ini
index 102f7bd..29bb6ea 100644
--- a/suite_scheduler.ini
+++ b/suite_scheduler.ini
@@ -1117,7 +1117,6 @@
 
 [ArcCtsBranchPerBuild]
 run_on: new_build
-hour: 16
 suite: arc-cts
 pool: cts
 boards: cyan-cheets, elm-cheets, samus-cheets, veyron_minnie-cheets