Removing <p> and <br/> tags in WordPress posts

Solution for : Removing <p> and <br/> tags in WordPress posts

This happens because of WordPress's wpautop. Simply add below line of code in your theme's functions.php file

remove_filter( 'the_content', 'wpautop' );
remove_filter( 'the_excerpt', 'wpautop' );

For more information: http://codex.wordpress.org/Function_Reference/wpautop