Drop unused field in GalleryInfo

app/src/main/java/com/hippo/ehviewer/client/data/AbstractGalleryInfo.kt

@@ -16,9 +16,6 @@ interface AbstractGalleryInfo {
     var pages: Int
     var thumbWidth: Int
     var thumbHeight: Int
-    var spanSize: Int
-    var spanIndex: Int
-    var spanGroupIndex: Int
     var simpleLanguage: String?
     var favoriteSlot: Int
     var favoriteName: String?

app/src/main/java/com/hippo/ehviewer/client/data/BaseGalleryInfo.kt

@@ -68,15 +68,6 @@ open class BaseGalleryInfo(
     @Ignore
     override var thumbHeight: Int = 0,
 
-    @Ignore
-    override var spanSize: Int = 0,
-
-    @Ignore
-    override var spanIndex: Int = 0,
-
-    @Ignore
-    override var spanGroupIndex: Int = 0,
-
     @ColumnInfo(name = "SIMPLE_LANGUAGE")
     override var simpleLanguage: String? = null,