Remove useless code

src/main/java/com/kdanmobile/reader/ReaderActivity.kt

@@ -379,7 +379,6 @@ abstract class ReaderActivity : KdanBaseActivity(), ReaderSettingListener, PdfTh
         }
         readerModel.onPdfChangedListener?.onPageUpdated(arrayListOf(currentPageIndex))
 
-        view_ink_menu.clearAnimation()
         when (annotationMode == ReaderViewModel.AnnotationMode.INK) {
             true -> AnimationUtil.showViewAlpha(view_ink_menu)
             false -> AnimationUtil.hideViewAlpha(view_ink_menu)