[Build] Remove unused variables

...to satisfy JSHint

platform/persistence/couch/src/CouchIndicator.js

@@ -74,7 +74,7 @@ define(
 
 
             // Callback if the HTTP request to Couch fails
-            function handleError(err) {
+            function handleError() {
                 self.state = DISCONNECTED;
             }
 

platform/persistence/couch/src/CouchPersistenceProvider.js

@@ -116,7 +116,7 @@ define(
             return this.$q.when(this.spaces);
         };
 
-        CouchPersistenceProvider.prototype.listObjects = function (space) {
+        CouchPersistenceProvider.prototype.listObjects = function () {
             return this.get("_all_docs").then(bind(getIdsFromAllDocs, this));
         };