I have added below given xml code in default.xml, sign out is coming two times , 1 is in dropdown and another one is in top links, i want to remove signout from top links in magento 2.1 please check the code.
<?xml version="1.0"?>
<!--
/**
* Copyright © 2016 Magento. All rights reserved.
* See COPYING.txt for license details.
*/
-->
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
<referenceContainer name="header.panel">
<block class="Magento\Cms\Block\Block" name="free_shipping">
<arguments>
<argument name="block_id" xsi:type="string">free_shipping</argument>
</arguments>
</block>
<block class="Magento\Framework\View\Element\Html\Links" name="header.links">
<arguments>
<argument name="css_class" xsi:type="string">header links</argument>
</arguments>
</block>
</referenceContainer>
<referenceBlock name="logo">
<arguments>
<argument name="logo_img_width" xsi:type="number">148</argument>
<argument name="logo_img_height" xsi:type="number">43</argument>
</arguments>
</referenceBlock>
<referenceBlock name="header.links">
<block class="Magento\Framework\View\Element\Html\Link" name="storelocate.link" after="-">
<arguments>
<argument name="label" xsi:type="string" translate="true">Store Locator</argument>
<argument name="path" xsi:type="string" translate="false">store-locator</argument>
<argument name="class" xsi:type="string">store_locator</argument>
</arguments>
</block>
<block class="Magento\Framework\View\Element\Html\Link" name="comcom.link" after="about-us">
<arguments>
<argument name="label" xsi:type="string" translate="true">Community Commerce</argument>
<argument name="path" xsi:type="string" translate="false">community-commerce</argument>
<argument name="class" xsi:type="string">community_commerece</argument>
</arguments>
</block>
<block class="Magento\Framework\View\Element\Html\Link" name="story.link" after="comunity-commerce">
<arguments>
<argument name="label" xsi:type="string" translate="true">Our Story</argument>
<argument name="path" xsi:type="string" translate="false">our-story</argument>
<argument name="class" xsi:type="string">our_story</argument>
</arguments>
</block>
<block class="Magento\Framework\View\Element\Html\Link" name="ingred.link" after="our-story">
<arguments>
<argument name="label" xsi:type="string" translate="true">Our Ingredients</argument>
<argument name="path" xsi:type="string" translate="false">our-ingredients</argument>
<argument name="class" xsi:type="string">our_ingredients</argument>
</arguments>
</block>
<referenceBlock name="skip_to_content" remove="true" />
</referenceBlock>
<!-- <referenceContainer name="header.panel">
<container name="header-links-nxt" as="header links" label="Header links" htmlTag="ul" htmlClass="header links secondary" after="-">
</container>
</referenceContainer> -->
<referenceContainer name="footer-container">
<container name="footer-content-customised" htmlTag="div" htmlClass="footer-content-customised" before="-">
<container name="footer-top" label="Footer Top" htmlTag="div" htmlClass="footer-top page-main sheamoisture_footer_contents" before="-">
<block class="Magento\Cms\Block\Block" name="footer-content-top">
<arguments>
<argument name="block_id" xsi:type="string">footer-content-top</argument>
</arguments>
</block>
</container>
<container name="footer-bottom" as="footer content" label="Footer Bottom" htmlTag="div" htmlClass="footer content" after="-">
<block class="Magento\Framework\View\Element\Html\Links" name="footer_links">
<arguments>
<argument name="css_class" xsi:type="string">footer links</argument>
</arguments>
</block>
</container>
<referenceBlock name="footer_links">
<block class="Magento\Framework\View\Element\Html\Link\Current" name="FAQ">
<arguments>
<argument name="label" xsi:type="string">FAQ</argument>
<argument name="path" xsi:type="string">faq</argument>
</arguments>
</block>
<block class="Magento\Framework\View\Element\Html\Link\Current" name="Privacy Policy">
<arguments>
<argument name="label" xsi:type="string">Privacy Policy</argument>
<argument name="path" xsi:type="string">privacy-policy</argument>
</arguments>
</block>
<block class="Magento\Framework\View\Element\Html\Link\Current" name="Terms of Use">
<arguments>
<argument name="label" xsi:type="string">Terms of Use</argument>
<argument name="path" xsi:type="string">terms-of-use</argument>
</arguments>
</block>
<block class="Magento\Framework\View\Element\Html\Link\Current" name="Returns Policy">
<arguments>
<argument name="label" xsi:type="string">Return Policy</argument>
<argument name="path" xsi:type="string">return-policy</argument>
</arguments>
</block>
</referenceBlock>
</container>
</referenceContainer>
<move element="footer-bottom" destination="footer-content-customised" />
<!-- <move element="minicart" destination="header.links" before="-"/>
<move element="top.search" destination="header.links" after="-"/> -->
<move element="catalog-search-advanced-link" destination="footer_links" before="-"/>
<referenceBlock name="search-term-popular-link" remove="true"/>
<referenceBlock name="points.balance" remove="true"/>
<referenceBlock name="privacy-policy-link" remove="true"/>
<referenceBlock name="form.subscribe" remove="true"/>
<referenceBlock name="catalog-search-advanced-link" remove="true"/>
<referenceBlock name="sales-guest-form-link" remove="true"/>
<referenceBlock name="report.bugs" remove="true"/>
<move element="copyright" destination="footer-bottom"/>
<referenceBlock name="contact-us-link" remove="true"/>
</body>
</page>