function bpfr_hide_profile_edit( $retval ) {
    // remove field from edit tab
    if(  bp_is_profile_edit() ) {
        $retval['exclude_fields'] = '54'; // ID's separated by comma
    }
    // allow field on register page
    if ( bp_is_register_page() ) {
        $retval['include_fields'] = '54'; // ID's separated by comma
    }

    // hide the field on profile view tab
    if ( $data = bp_get_profile_field_data( 'field=54' ) ) :
        $retval['exclude_fields'] = '54'; // ID's separated by comma
    endif;

    return $retval;
}

function sqr_hide_x_custom_profile() {
    if (!pmpro_has_membership_access()) {
        add_filter('bp_after_has_profile_parse_args', 'bpfr_hide_profile_edit');
    }
}
add_action('init', 'sqr_hide_x_custom_profile');