fix(dialog): animation 删除透明度固定为1动画

Author: QiuShuiBai

packages/mpx-cube-ui/src/components/dialog/css.styl

@@ -18,15 +18,10 @@
     @keyframes dialog-zoom
       0%
         transform $var(dialog-zoom-transform-from)
-        opacity $var(dialog-zoom-opacity-from)
-
       50%
         transform $var(dialog-zoom-transform-mid)
-        opacity $var(dialog-zoom-opacity-mid)
-
       100%
         transform $var(dialog-zoom-transform-to)
-        opacity $var(dialog-zoom-opacity-to)
 
     @keyframes dialog-zoom-no-mid
       0%