Change the_content() in Theme Thirteen

I worked with site created on Theme Thirteen and theme uses
<?php the_content( __( 'Continue reading <span class="meta-nav">&rarr;</span>', 'twentythirteen' ) ); ?>
to get post title, date, part of content and read-more link.
But now I need to show only post date and entire post content, but I can’t find how to do that. If I try to use <?php the_content(); ?> I get the same if I use <?php the_content( __( 'Continue reading <span class="meta-nav">&rarr;</span>', 'twentythirteen' ) ); ?>
How to get post date and entire post content in template ?

Solutions Collecting From Web of "Change the_content() in Theme Thirteen"

You probably have a read more tag in your posts, so you will need to remove them.

We can use the the_content filter to achieve that. We need to search and replace the <!--more--> tag with nothing.

You can try the following: (NOTE: The following code is untested)

add_filter( 'the_content', function ( $content )
{
    return str_replace( '<!--more-->', '', $content );
}, 11 );