Magento – Remove “Sign Out” link in header panel but keep “Sign Out” link in dropdown

here is my answer and hope can be a little help for those who are new to magento2.

//vendor/magento/theme-frontend-blank/web/js/theme.js

there is a line

$('.panel.header > .header.links').clone().appendTo('#store\.links');

if .header.links is moved to block other than .panel.header or even is wrapped in a new div, the above line is required to be updated to. for my case, it should be like

$('.header.content >.star-customer-login-links > .header.links').clone().appendTo('#store\.links');

This is the solution for this issue. but there may be another place have to be updated too. it's

/vendor/magento/theme-frontend-blank/web/js/navigation-menu.js

Unfortunately there's no easy way to do it. Those elements are not coming from a template, they are generated by block classes in the Magento_Customer module.

The easiest way to do this that I've found would be to make a module with a custom block, template, and default.xml layout. You'd remove the 'header.links' block and then insert your own block and template. You would just need your block class to contain the logic to display which links depending on whether customer is logged in.

To remove the existing block and insert your own, just add the following code to your default.xml within the body tag:

<referenceBlock name="header.links" display="false"/>

        <referenceContainer name="header.panel">
            <block class="Me\MyModule\Block\MyBlock" template="Me_MyModule::mytemplate.phtml" name="top.mylinks"/>
        </referenceContainer>