Remove Heading from the WordPress Editor #tinymce #removeheadings

functions.php

<?php
/**
 *  Remove the h4 to h6 tag from the WordPress editor.
 *
 *  @param   array  $settings  The array of editor settings
 *  @return  array             The modified edit settings
 */
function remove_headings_from_editor( $settings ) {
    // Default as example
    // $settings['block_formats'] = 'Paragraph=p;Heading 1=h1;Heading 2=h2;Heading 3=h3;Heading 4=h4;Heading 5=h5;Heading 6=h6;Preformatted=pre;';
    $settings['block_formats'] = 'Paragraph=p;Heading 1=h1;Heading 2=h2;Heading 3=h3;';
    return $settings;
}
add_filter( 'tiny_mce_before_init', 'remove_headings_from_editor' );