Remove 'Manage Database' and 'Powered by Odoo' from Login Page, Website Footer and Setting Menu

remove_manage_database_powered_by_odoo.xml

<?xml version='1.0' encoding='utf-8'?>
<openerp>
 <data>
        <template id="inherited_login_layout" inherit_id="web.login_layout" name="My Theme Login">
            <xpath expr="//div[@class='oe_single_form_footer']" position="replace">
                <div class="oe_single_form_footer" style="bottom: -50px;">
                 Developed By: Hassan Enterprises
                 <span class="oe_footer_seperator"> | </span>
                 Phone: +92 321 1234567
                 <span class="oe_footer_seperator"></span>
                 Email: abc@gmail.com
                </div>           
            </xpath>
        </template>  
 </data>
</openerp>

Read more in detail: https://learnopenerp.blogspot.com/2018/09/remove-manage-database-and-powered-by-odoo-from-login-page.html