add: deleteMyUser and deleteMyArtist

utils/deleteDatas.js

@@ -0,0 +1,30 @@
+const mysql = require('mysql');
+const connection = mysql.createConnection({ host: 'localhost', user: 'root', password: '', database: 'spotitip' });
+
+async function deleteMyUser(userId) {
+    return new Promise((resolve, reject) => {
+        const sql = 'DELETE FROM user WHERE id= ?';
+        connection.query(sql, [userId], (err, results) => {
+            if (err) {
+                reject(err);
+            } else {
+                resolve(results);
+            }
+        });
+    });
+}
+
+async function deleteMyArtist(artistId) {
+    return new Promise((resolve, reject) => {
+        const sql = 'DELETE FROM artist WHERE id= ?';
+        connection.query(sql, [artistId], (err, results) => {
+            if (err) {
+                reject(err);
+            } else {
+                resolve(results);
+            }
+        });
+    });
+}
+
+module.exports = { deleteMyUser, deleteMyArtist }