Fix link card images not loading on Mastodon

Tusker/Views/CachedImageView.swift

@@ -18,7 +18,7 @@ class CachedImageView: UIImageView {
     
     override var image: UIImage? {
         didSet {
-            fetchTask?.cancel()
+            blurHashTask?.cancel()
         }
     }
     

Tusker/Views/Status/StatusCardView.swift

@@ -199,38 +199,6 @@ class StatusCardView: UIView {
         }
     }
     
-    private func loadBlurHash() {
-        guard let card = card, let hash = card.blurhash else { return }
-        
-        AttachmentView.queue.async { [weak self] in
-            guard let self = self else { return }
-            
-            let size: CGSize
-            if let width = card.width, let height = card.height {
-                let aspectRatio = CGFloat(width) / CGFloat(height)
-                if aspectRatio > 1 {
-                    size = CGSize(width: 32, height: 32 / aspectRatio)
-                } else {
-                    size = CGSize(width: 32 * aspectRatio, height: 32)
-                }
-            } else {
-                size = CGSize(width: 32, height: 32)
-            }
-
-            guard let preview = UIImage(blurHash: hash, size: size) else {
-                return
-            }
-            
-            DispatchQueue.main.async { [weak self] in
-                guard let self = self,
-                      self.card?.url == card.url,
-                      self.imageView.image == nil else { return }
-                
-                self.imageView.image = preview
-            }
-        }
-    }
-    
     override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
         hStack.backgroundColor = activeBackgroundColor
         setNeedsDisplay()