Jira:Interface:CustomizeLoginMessage

In JiraWebActionSupport.properties:

login.requestaccount = <a href="reset.url">Reset your password here</a>  
common.concepts.forgotpassword =  

In ``:

Comment-out the "ForgotLoginDetails.jspa" block in atlassian-jira/includes/loginform.jsp

<!--
        <% if (showForgotLoginDetails) { %>
                ...
        <% } %>
-->