Kill camera_frames queue

Use EventLoop instead.

Change-Id: I39352fecbddd677a32de1a0e77ac11947bc76c6f
diff --git a/y2019/BUILD b/y2019/BUILD
index c49e7c4..792844f 100644
--- a/y2019/BUILD
+++ b/y2019/BUILD
@@ -56,6 +56,7 @@
         "//aos:make_unique",
         "//aos:math",
         "//aos/controls:control_loop",
+        "//aos/events:shm-event-loop",
         "//aos/logging",
         "//aos/logging:queue_logging",
         "//aos/robot_state",