refactor

src/main/java/com/alibaba/druid/sql/parser/Token.java

@@ -145,7 +145,6 @@ public enum Token {
     MODEL("MODEL"),
     MERGE("MERGE"),
     MATCHED("MATCHED"),
-    LOG("LOG"),
     ERRORS("ERRORS"),
     REJECT("REJECT"),
     UNLIMITED("UNLIMITED"),
@@ -156,9 +155,7 @@ public enum Token {
     ADVISE("ADVISE"),
     SESSION("SESSION"),
     PROCEDURE("PROCEDURE"),
-    AT("AT"),
     LOCAL("LOCAL"),
-    TIME("TIME"),
     ZONE("ZONE"),
     SYSDATE("SYSDATE"),
     DECLARE("DECLARE"),