Remove unused import from example test

Author: jstewart148

driver-sync/src/examples/documentation/ChangeStreamSamples.java

@@ -20,7 +20,6 @@
 import com.mongodb.client.MongoClient;
 import com.mongodb.client.MongoClients;
 import com.mongodb.client.MongoCollection;
-import com.mongodb.client.MongoCursor;
 import com.mongodb.client.MongoDatabase;
 import com.mongodb.client.model.Aggregates;
 import com.mongodb.client.model.Filters;