When You check the native Magento shop, You have to display the Newsletter Subscription Text box in the footer area of the site.
You can Disable/Remove it from the Admin panel.
1. Stores -> Configuration -> Customers -> Newsletter Tab
2. Click on General Options Section
3. Set Enabled to No.
Newsletter Subscription section will be removed from the site.
A default.xml layout file contains the logic to display a newsletter section in the footer.
Path: vendor/magento/module-newsletter/view/frontend/layout/default.xml
<referenceContainer name="footer">
<block class="Magento\Newsletter\Block\Subscribe" name="form.subscribe" as="subscribe" before="-" template="Magento_Newsletter::subscribe.phtml" ifconfig="newsletter/general/active"/>
</referenceContainer>
You can see the name form.subscribe Block depends on configuration settings.
newsletter/general/active if you have disabled subscriber section, Magento doesn’t display the Newsletter box in the footer.
Native Newsletter section template file path,
vendor/magento/module-newsletter/view/frontend/templates/subscribe.phtml
If you want to remove from the site forcefully, You can remove Newsletter section by layout XML using below way,
<referenceBlock name="form.subscribe" remove="true" />
The above line will remove the Newsletter section from the entire site.