remove keyword : DAY、MONTH、HOUR、MINUTE、SECOND

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

@@ -142,12 +142,7 @@ public enum Token {
     EXTRACT("EXTRACT"),
     TIMESTAMP("TIMESTAMP"),
     DATE("DATE"),
-    CURSOR("SECOND"),
-    DAY("DAY"),
-    YEAR("YEAR"),
-    MONTH("MONTH"),
-    MINUTE("MINUTE"),
-    SECOND("SECOND"),
+    CURSOR("CURSOR"),
     TO("TO"),
     MODEL("MODEL"),
     MERGE("MERGE"),