diff --git a/pkg/logic/upload.go b/pkg/logic/upload.go
index ce37e9e..d2cd227 100644
--- a/pkg/logic/upload.go
+++ b/pkg/logic/upload.go
@@ -48,19 +48,6 @@ func ReadOrientation(filename string) (direct int, err error) {
 	return
 }
 
-// 旋转90度
-func Rotate90(m image.Image) image.Image {
-	rotate90 := image.NewRGBA(image.Rect(0, 0, m.Bounds().Dy(), m.Bounds().Dx()))
-	// 矩阵旋转
-	for x := m.Bounds().Min.Y; x < m.Bounds().Max.Y; x++ {
-		for y := m.Bounds().Max.X - 1; y >= m.Bounds().Min.X; y-- {
-			//  设置像素点
-			rotate90.Set(m.Bounds().Max.Y-x, y, m.At(y, x))
-		}
-	}
-	return rotate90
-}
-
 // 旋转90度
 func rotate90(m image.Image) image.Image {
 	rotate90 := image.NewRGBA(image.Rect(0, 0, m.Bounds().Dy(), m.Bounds().Dx()))