samples: updating to latest google-cloud-* dependencies (#723)

Author: jabubake

language/snippets/src/main/java/com/example/language/QuickstartSample.java

@@ -18,10 +18,9 @@
 
 // [START language_quickstart]
 // Imports the Google Cloud client library
-import com.google.cloud.language.spi.v1.LanguageServiceClient;
-
 import com.google.cloud.language.v1.Document;
 import com.google.cloud.language.v1.Document.Type;
+import com.google.cloud.language.v1.LanguageServiceClient;
 import com.google.cloud.language.v1.Sentiment;
 
 public class QuickstartSample {