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>
1 file changed