Anonymous constant

KingfisherTests/UIImageViewExtensionTests.swift

@@ -186,22 +186,18 @@ class UIImageViewExtensionTests: XCTestCase {
                 task1Completion = true
         }
         
-        let task2 = imageView.kf_setImageWithURL(URL, placeholderImage: nil, optionsInfo: nil, progressBlock: { (receivedSize, totalSize) -> () in
+        let _ = imageView.kf_setImageWithURL(URL, placeholderImage: nil, optionsInfo: nil, progressBlock: { (receivedSize, totalSize) -> () in
             
             }) { (image, error, cacheType, imageURL) -> () in
                 task2Completion = true
         }
         
-        let task3 = imageView.kf_setImageWithURL(URL, placeholderImage: nil, optionsInfo: nil, progressBlock: { (receivedSize, totalSize) -> () in
+        let _ = imageView.kf_setImageWithURL(URL, placeholderImage: nil, optionsInfo: nil, progressBlock: { (receivedSize, totalSize) -> () in
             
             }) { (image, error, cacheType, imageURL) -> () in
                 task3Completion = true
         }
         
-        // Prevent unused warning.
-        print(task2)
-        print(task3)
-        
         task1.cancel()
         
         dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(Double(NSEC_PER_SEC) * 0.09)), dispatch_get_main_queue()) { () -> Void in