Fix test. Revert test line.

src/OrbitClient.js

@@ -146,9 +146,6 @@ class OrbitDB {
   }
 
   _deleteChannel(channel, password) {
-    if(!this._ipfs)
-      throw new Error("IPFS daemon not running");
-
     this._store[channel].clear();
     return true;
   }

test/orbit-client-tests.js

@@ -198,7 +198,7 @@ describe('Orbit Client', function() {
         const iter = db.iterator();
         const first = iter.next().value;
         const second = iter.next().value;
-        assert.equal(first.payload.key, items2[items.length - 1]);
+        assert.equal(first.payload.key, items2[items2.length - 1]);
         assert.equal(second, null);
         assert.equal(first.payload.value, 'hello4');
         done();