Remove Taxonomy Meta Box from Edit Screen

remove-taxonomy-meta-box.php

<?php

function register_custom_taxonomy() {
    $taxonomy_labels = [
        'name'          => esc_html__( 'Custom Terms', 'text-domain' ),
        'singular_name' => esc_html__( 'Custom Term', 'text-domain' ),
        'menu_name'     => esc_html__( 'Terms', 'text-domain' ),
    ];

    $taxonomy_args = [
        'labels'             => $taxonomy_labels,
        'rewrite'            => [
            'slug' => 'custom-slug,
        ],
        'show_in_rest'       => true,
        'show_ui'            => true,
        'show_in_quick_edit' => false,
        'meta_box_cb'        => false,
    ];

    register_taxonomy( 'custom_taxonomy_name', 'post_type_name', $taxonomy_args );
}
add_action( 'init', 'register_custom_taxonomy' );

/**
 * Filters a taxonomy returned from the REST API.
 *
 * This function removes the taxonomy settings panel if the
 * meta_box_cb arg is set to false when registering the taxonomy.
 *
 * @param WP_REST_Response $response The response object.
 * @param WP_Taxonomy $taxonomy The original taxonomy object.
 * @param WP_REST_Request $request Request used to generate the response.
 *
 * @return WP_REST_Response
 */
function remove_taxonomy_settings_panel( $response, $taxonomy, $request ) {
    $context = ! empty( $request['context'] ) ? $request['context'] : 'view';

    if ( $context === 'edit' && $taxonomy->meta_box_cb === false ) {
        $data_response = $response->get_data();
        $data_response['visibility']['show_ui'] = false;
        $response->set_data( $data_response );
    }

    return $response;
}
add_filter( 'rest_prepare_taxonomy', 'remove_taxonomy_settings_panel', 10, 3 );