Example usage filter `wpcfm_multi_env` to disable multi-environment feature in Pantheon

wpcfm_multi_env_disable.php

<?php
// wp-content/mu-plugins/wp-cfm-multi-env.php
// ...

// Return empty array to disable multi-environment feature.
function my_wpcfm_multi_env_disable( $environments ) {
    return [];
}
add_filter( 'wpcfm_multi_env', 'my_wpcfm_multi_env_disable' );


// Or, one liner.
add_filter( 'wpcfm_multi_env', '__return_empty_array' );