Remove old code fragment

Author: blootsvoets

kafka-connect-fitbit-source/src/main/java/org/radarbase/connect/rest/fitbit/user/YamlUserRepository.java

@@ -276,8 +276,6 @@ private JsonNode requestAccessToken(String refreshToken) throws IOException {
             .build())
         .build();
 
-    Exception exception = null;
-    JsonNode node = null;
     try (Response response = client.newCall(request).execute()) {
       ResponseBody responseBody = response.body();