BP Docs: Don't allow group docs to have "creator only" access

disallow-creator-access-for-group-docs.php

<?php 
add_filter( 'bp_docs_get_access_options', 'remove_creator_option_for_group_docs', 10, 4 );
function remove_creator_option_for_group_docs( $options, $settings_field, $doc_id = 0, $group_id = 0 ) {
	if ( ! $group_id ) {
		$group_id = bp_docs_get_associated_group_id( $doc_id );
	}

	// If this is the Doc creation page, check to see whether a
	// group id has been passed somewhere
	if ( empty( $group_id ) ) {
		if ( isset( $_POST['associated_group_id'] ) ) {
			$group_id = intval( $_POST['associated_group_id'] );
		} else if ( isset( $_GET['associated_group_id'] ) ) {
			$group_id = intval( $_GET['associated_group_id'] );
		} else if ( isset( $_GET['group'] ) ) {
			$maybe_group = BP_Groups_Group::get_id_from_slug( $_GET['group'] );
			if ( $maybe_group ) {
				$group_id = $maybe_group;
			}
		}
	}

	if ( $group_id && current_user_can( 'bp_docs_associate_with_group', $group_id ) ) {
		foreach ( $options as $key => $opt ) {
			if ( 'creator' === $opt['name'] ) {
				unset( $options[ $key ] );
			}
		}
	}

	return $options;
}