Delete some useless code

Sources/Extensions/NSTextAttachment+Kingfisher.swift

@@ -224,9 +224,6 @@ extension KingfisherWrapper where Base: NSTextAttachment {
                         self.base.image = value.image
                         #if canImport(UIKit)
                         attributedView.setNeedsDisplay()
-                        DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
-                            
-                        }
                         #else
                         attributedView.setNeedsDisplay(attributedView.bounds)
                         #endif