Fix switchMap import

Author: daniel-stoneuk

app/src/main/java/guide/graphql/toc/ui/chapters/ChaptersViewModel.kt

@@ -13,8 +13,6 @@ import guide.graphql.toc.apolloClient
 
 class ChaptersViewModel : ViewModel() {
 
-    val bookId: LiveData<Int> = MutableLiveData(0)
-
     val chapterList: LiveData<Resource<List<ChaptersQuery.Chapter>>> = liveData {
         emit(Resource.loading(null))
         try {

app/src/main/java/guide/graphql/toc/ui/sections/SectionsViewModel.kt

@@ -1,9 +1,7 @@
 package guide.graphql.toc.ui.sections
 
 import android.util.Log
-import androidx.lifecycle.LiveData
-import androidx.lifecycle.MutableLiveData
-import androidx.lifecycle.ViewModel
+import androidx.lifecycle.*
 import com.apollographql.apollo.coroutines.toDeferred
 import com.apollographql.apollo.exception.ApolloException
 import guide.graphql.toc.Resource