Below is process for removing these links.
"Login with OpenERP"
- Go to Setting->User menu->Oauth Provider
- Uncheck "Allowed" for OpenERP.com Accounts
Removing "Manage Databases" and "Powered by OpenERP"
- Go to openerp/web module
- Go to web/view/webclient_templates.xml and make it invisible using html tag (-->). Line number 64.
- Do not forgot to upgrade web module after making changes in webclient_templates.xml
<!-- <a class="oe_login_manage_db" t-attf-href="/web/database/manager{{ '?debug' if debug else '' }}">Manage Databases</a> <span class="oe_footer_seperator"> | </span> </t> <a href="http://www.openerp.com" target="_blank">Powered by <span>OpenERP</span></a> -->