Remove experimental flag for autoupdate_Rollback.

BUG=None
TEST=Visual / also to confirm this was ok, checked waterfall. 0
failures for 5 days.

Change-Id: Ib19e4693540da1c059e728b73ff6f7d2e6812793
Reviewed-on: https://chromium-review.googlesource.com/174910
Tested-by: Chris Sosa <sosa@chromium.org>
Reviewed-by: Alex Deymo <deymo@chromium.org>
Commit-Queue: Chris Sosa <sosa@chromium.org>
diff --git a/server/site_tests/autoupdate_Rollback/control b/server/site_tests/autoupdate_Rollback/control
index dbfe93c..5bcd904 100644
--- a/server/site_tests/autoupdate_Rollback/control
+++ b/server/site_tests/autoupdate_Rollback/control
@@ -11,7 +11,6 @@
 TEST_CLASS = "platform"
 TEST_TYPE = "server"
 SUITE = "bvt"
-EXPERIMENTAL = "True"
 
 DOC = """
 This is a rollback test for Chrome OS releases. It first updates a machine and