阴性词被加入推送中，暂时先去掉

nlp/src/main/java/org/diagbot/nlp/feature/extract/CaseToken.java

@@ -75,7 +75,7 @@ public abstract class CaseToken {
                 searched_position = Arrays.binarySearch(negative_words, cursorLexeme.getText());
                 if (searched_position > -1) {
                     isFind = true;
-                    this.updateFeaturesMap(featuresList, cursorLexeme.getText(), lexeme, featureType);
+//                    this.updateFeaturesMap(featuresList, cursorLexeme.getText(), lexeme, featureType);
                     break;
                 }
             }