Remove LineCache diring animation images processing (issue is fixed in vips 8.15.2)

processing/processing.go

@@ -144,12 +144,6 @@ func transformAnimated(ctx context.Context, img *vips.Image, po *options.Process
 		}
 	}()
 
-	// Splitting and joining back large WebPs may cause segfault.
-	// Caching page region cures this
-	if err = img.LineCache(frameHeight); err != nil {
-		return err
-	}
-
 	for i := 0; i < framesCount; i++ {
 		frame := new(vips.Image)