优化

app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt

@@ -30,7 +30,6 @@ import io.legado.app.utils.*
 import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.Job
-import kotlinx.coroutines.flow.collect
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext