Most Blogger template that I created still using old version of "automatic readmore" feature. So, if you are using my blogger templates than you need to edit the template manually to remove read more option from the static pages.
Follow the instructions below to remove automatic read more from blogger static pages.
1. Go to Dashboard → Design → Edit Html → Expand Widget Templates.
2. Press Ctrl+F and search this codes.
<div class='post-body entry-content'>
Then add this code below that codes.
<b:if cond='data:blog.pageType == "static_page"'><br/>
<data:post.body/>
<b:else/>
Look like this
<div class='post-body entry-content'>
<b:if cond='data:blog.pageType == "static_page"'><br/>
<data:post.body/>
<b:else/>
3. Press Ctrl+F and search this codes.
<div style='clear: both;'/> <!-- clear for photos floats -->
Then add this code above that codes.
</b:if>
look like this
</b:if>
<div style='clear: both;'/> <!-- clear for photos floats -->
4. Save
