Revert "优化"

This reverts commit f027428511.

app/src/main/java/io/legado/app/ui/book/read/page/ReadView.kt

@@ -98,6 +98,7 @@ class ReadView(context: Context, attrs: AttributeSet) :
         addView(curPage)
         addView(prevPage)
         if (!isInEditMode) {
+            upBg()
             setWillNotDraw(false)
             upPageAnim()
         }