Delete syncer tiddlerInfo when tiddlers are deleted

core/modules/syncer.js

@@ -495,6 +495,7 @@ Syncer.prototype.dispatchTask = function(task,callback) {
 			if(err) {
 				return callback(err);
 			}
+			delete self.tiddlerInfo[task.title];
 			// Invoke the callback
 			callback(null);
 		},{