Remove some unnecessary code

Author: gkubisa

lib/client/doc.js

@@ -204,10 +204,6 @@ Doc.prototype.ingestSnapshot = function(snapshot, callback) {
 };
 
 Doc.prototype.whenNothingPending = function(callback) {
-  if (this.hasPending()) {
-    this.once('nothing pending', callback);
-    return;
-  }
   var doc = this;
   process.nextTick(function() {
     if (doc.hasPending()) {