delete in the backend

Lab01/app/database/database.go

@@ -45,6 +45,10 @@ func (db *Database) CreateTask(username string, description string) Task {
 	return task
 }
 
+func (db *Database) DeleteTask(id string) {
+	db.ORM.Delete(&Task{}, id)
+}
+
 func (db *Database) CreateUser(username string, password string) error {
 	user := User{Username: username, Password: password}
 	result := db.ORM.Create(&user)