优化

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

@@ -4,5 +4,4 @@ data class ImageColumn(
     override var start: Float,
     override var end: Float,
     var src: String
-) : BaseColumn {
-}
+) : BaseColumn

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

@@ -9,6 +9,4 @@ data class TextColumn(
     val charData: String,
     var selected: Boolean = false,
     var isSearchResult: Boolean = false
-) : BaseColumn {
-
-}
+) : BaseColumn