You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: org_team.go
    path of file: ./repos/gogs/internal/database
    
    the code of the file until where you have to start completion: // Copyright 2016 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

package database

import (
	"context"
	"fmt"
	"strings"

	"xorm.io/xorm"

	"gogs.io/gogs/internal/database/errors"
	"gogs.io/gogs/internal/errutil"
)

const OWNER_T
    
func DeleteTeam(t *Team) error {
	if err := t.GetRepositories(); err != nil {
		return err
	}

	// Get organization.
	org, err := Users.GetByID(context.TODO(), t.OrgID)
	if err != nil {
		return err
	}

	sess := x.NewSession()
	defer sess.Close()
	if err = sess.Begin(); err != nil {
		return err
	}

	// Delete all accesses.
	for _, repo := range t.Repos {
		if err = repo.recalculateTeamAccesses(sess, t.ID); err != nil {
			return err
		}
	}

	// Delete team-user.
	if _, err = sess.Where("org_id=?", org.ID).Where("team_id=?", t.ID).Delete(new(TeamUser)); err != nil {
		return err
	}

	// Delete team.
	if _, err = sess.ID(t.ID).Delete(new(Team)); err != nil {
		return err
	}
	// Update organization number of teams.
	if _, err = sess.Exec("UPDATE `user` SET num_teams=num_teams-1 WHERE id=?", t.OrgID); err != nil {
		return err
	}

	return sess.Commit()
}