Minor refactors

data/src/main/java/tachiyomi/data/history/HistoryRepositoryImpl.kt

@@ -89,9 +89,5 @@ class HistoryRepositoryImpl(
             logcat(LogPriority.ERROR, throwable = e)
         }
     }
-
-    override suspend fun getByMangaId(mangaId: Long): List<History> {
-        return handler.awaitList { historyQueries.getHistoryByMangaId(mangaId, HistoryMapper::mapHistory) }
-    }
     // SY <--
 }