Update VodRecordDao.java+del all

app/src/main/java/com/github/tvbox/osc/cache/VodRecordDao.java

@@ -30,6 +30,9 @@ public interface VodRecordDao {
     @Query("select count(*) from vodRecord")
     int getCount();
 
+    @Query("DELETE FROM vodRecord")
+    void deleteAll();
+
     /**
      * 保留最新指定条数, 其他删除.
      * @param size 保留条数
@@ -37,4 +40,4 @@ public interface VodRecordDao {
      */
     @Query("DELETE FROM vodRecord where id NOT IN (SELECT id FROM vodRecord ORDER BY updateTime desc LIMIT :size)")
     int reserver(int size);
-}
+}