samples: remove unused variable

thiagotnunes · thiagotnunes · commit 90c3161f4d1f · 2021-03-01T19:24:31.000+11:00
Clean up create backup samples by removing unused variable.
diff --git a/samples/snippets/src/main/java/com/example/spanner/SpannerSample.java b/samples/snippets/src/main/java/com/example/spanner/SpannerSample.java
@@ -1587,8 +1587,6 @@ static void queryWithQueryOptions(DatabaseClient dbClient) {
   static void createBackup(
       DatabaseClient databaseClient, DatabaseAdminClient dbAdminClient, DatabaseId databaseId,
       BackupId backupId) {
-    Database databaseToBackup = dbAdminClient
-        .getDatabase(databaseId.getInstanceId().getInstance(), databaseId.getDatabase());
     // Set expire time to 14 days from now.
     Timestamp expireTime = Timestamp.ofTimeMicroseconds(TimeUnit.MICROSECONDS.convert(
         System.currentTimeMillis() + TimeUnit.DAYS.toMillis(14), TimeUnit.MILLISECONDS));
