docs(samples): remove unsupported field RecognitionResult (#631)

Author: kweinmeister

mediatranslation/src/main/java/com/example/mediatranslation/TranslateFromMic.java

@@ -60,14 +60,11 @@ public void onStart(StreamController controller) {}
             public void onResponse(StreamingTranslateSpeechResponse response) {
               StreamingTranslateSpeechResult res = response.getResult();
               String translation = res.getTextTranslationResult().getTranslation();
-              String source = res.getRecognitionResult();
 
               if (res.getTextTranslationResult().getIsFinal()) {
                 System.out.println(String.format("\nFinal translation: %s", translation));
-                System.out.println(String.format("Final recognition result: %s", source));
               } else {
                 System.out.println(String.format("\nPartial translation: %s", translation));
-                System.out.println(String.format("Partial recognition result: %s", source));
               }
             }