How to remove "Subscribe to: Posts (Atom)" at the end of every page?

You can remove it by:

1. Log in to Blogger.com2. Click Theme -> Edit HTML3. Click anywhere in the HTML code box and press Control+F (Windows) or Command+F (Mac) to search for Blog feed links4. You will find the code below.
<b:if cond='data:blog.pageType != "item"'> <!-- Blog feed links --><b:if cond='data:feedLinks'><div class='blog-feeds'><b:include data='feedLinks' name='feedLinksBody'/></div></b:if>
5. Just remove the line below.
<b:include data='feedLinks' name='feedLinksBody'/>
6. Click Save theme and Click View blog