diff --git a/src/main/java/net/lamgc/cgj/db/RankingDB.java b/src/main/java/net/lamgc/cgj/db/RankingDB.java
deleted file mode 100644
index 30d56c0..0000000
--- a/src/main/java/net/lamgc/cgj/db/RankingDB.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package net.lamgc.cgj.db;
-
-import java.sql.Connection;
-import java.sql.DriverManager;
-import java.sql.SQLException;
-import java.sql.Statement;
-
-public class RankingDB {
-
-    private final Connection dbConnection;
-
-    public RankingDB(String dbUrl, String username, String password) throws SQLException {
-        try {
-            Class.forName("com.mysql.cj.jdbc.Driver");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-        dbConnection = DriverManager.getConnection("jdbc:mysql://" + dbUrl + "/pixivRanking?useSSL=false&serverTimezone=UTC",username,password);
-        checkAndFix(dbConnection);
-    }
-
-    private static void checkAndFix(Connection connection) throws SQLException {
-        Statement statement = connection.createStatement();
-        statement.execute("");
-    }
-
-
-}