Revert "routes/index: Fix versions array bug"

This reverts commit 9d68217.

Author: Turbo87

app/routes/index.js

@@ -5,12 +5,7 @@ export default Ember.Route.extend({
   model() {
     function addCrates(store, crates) {
         for (var i = 0; i < crates.length; i++) {
-            const crate = crates[i];
-            if (crate.versions == null) {
-              // passing `null` will return an empty versions array
-              delete crate.versions;
-            }
-            crates[i] = store.push(store.normalize('crate', crate));
+            crates[i] = store.push(store.normalize('crate', crates[i]));
         }
     }