Move jsmn to the janitors.

Change-Id: Id02627af2171d9b7a66f5185b99a6d90a5301625
diff --git a/OWNERS b/OWNERS
index 48b5c88..7529cb9 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,3 +1 @@
-# Default code reviewers picked from top 3 or more developers.
-# Please update this list if you find better candidates.
-hhb@google.com
+include platform/system/core:/janitors/OWNERS