Disable SubmarineFree

manifests/SubmarineFree.json

@@ -6,6 +6,5 @@
   "manualUrl": "https://github.com/david-c14/SubmarineFree/blob/master/manual/index.md",
   "repoVersion": "0.6.4",
   "buildTimestamp": 1528843271,
-  "latestVersion": "0.6.4",
-  "status": "available"
+  "latestVersion": "0.6.4"
 }