remove NSOperationQueue on CCMetadataNet

iOSClient/Networking/CCNetworking.h

@@ -116,7 +116,6 @@
 @property (nonatomic, strong) NSString *password;
 @property (nonatomic, strong) NSString *pathFolder;
 @property NSInteger priority;
-@property (nonatomic, strong) NSOperationQueue *queue;
 @property (nonatomic, strong) NSString *serverUrl;
 @property (nonatomic, strong) NSString *serverUrlTo;
 @property (nonatomic, strong) NSString *selector;

iOSClient/Networking/CCNetworking.m

@@ -1902,7 +1902,6 @@
     [metadataNet setPassword: self.password];
     [metadataNet setPathFolder: self.pathFolder];
     [metadataNet setPriority: self.priority];
-    [metadataNet setQueue: self.queue];
     [metadataNet setServerUrl: self.serverUrl];
     [metadataNet setServerUrlTo: self.serverUrlTo];
     [metadataNet setSelector: self.selector];