remove wildcard import

Author: martinbonnin

firebase-firestore/ktx/src/main/kotlin/com/google/firebase/firestore/ktx/Firestore.kt

@@ -18,7 +18,15 @@ import androidx.annotation.Keep
 import com.google.firebase.FirebaseApp
 import com.google.firebase.components.Component
 import com.google.firebase.components.ComponentRegistrar
-import com.google.firebase.firestore.*
+import com.google.firebase.firestore.DocumentSnapshot
+import com.google.firebase.firestore.FieldPath
+import com.google.firebase.firestore.FirebaseFirestore
+import com.google.firebase.firestore.FirebaseFirestoreSettings
+import com.google.firebase.firestore.QueryDocumentSnapshot
+import com.google.firebase.firestore.QuerySnapshot
+import com.google.firebase.firestore.DocumentReference
+import com.google.firebase.firestore.Query
+import com.google.firebase.firestore.MetadataChanges
 import com.google.firebase.firestore.util.Executors.BACKGROUND_EXECUTOR
 import com.google.firebase.ktx.Firebase
 import com.google.firebase.platforminfo.LibraryVersionComponent