Remove experimental flag from platform_RebootAfterUpdate.

BUG=chromium:249003
TEST=Test is green on builders.

Change-Id: I029a28106378ba984bcc91924a695f6d3abc149c
Reviewed-on: https://gerrit.chromium.org/gerrit/60877
Tested-by: Chris Sosa <sosa@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Chris Sosa <sosa@chromium.org>
diff --git a/server/site_tests/platform_RebootAfterUpdate/control b/server/site_tests/platform_RebootAfterUpdate/control
index d66a460..8ad2d12 100644
--- a/server/site_tests/platform_RebootAfterUpdate/control
+++ b/server/site_tests/platform_RebootAfterUpdate/control
@@ -11,7 +11,6 @@
 TEST_CLASS = "platform"
 TEST_TYPE = "server"
 SUITE = "bvt"
-EXPERIMENTAL = "True"
 
 DOC = """
 This test checks the behavior of reboot after update. It specifically tests