Dedulicate make_unique

This also gets us off of the WPILib one which goes away for 2019.

Change-Id: I0436ce8fd477bbb27d9b0a7c4832dad01c9bad35
diff --git a/y2018/BUILD b/y2018/BUILD
index 6173702..2a510a9 100644
--- a/y2018/BUILD
+++ b/y2018/BUILD
@@ -70,6 +70,7 @@
     deps = [
         ":status_light",
         "//aos:init",
+        "//aos:make_unique",
         "//aos:math",
         "//aos/controls:control_loop",
         "//aos/logging",