Delete Astra single option from multisites.

astra-wp-cli.php

<?php 
// Command - wp delete-astra-option delete --key={astra-settings key}
namespace DeleteAstraOption;
use WP_CLI, WP_CLI_Command;
if( class_exists( 'WP_CLI_Command' ) ) {
    class Commands extends WP_CLI_Command { 
        public function delete( $args, $assoc_args ) {
            $option_key = isset( $assoc_args['key'] ) ? $assoc_args['key'] : false;
            
            if( ! $option_key ) {
                WP_CLI::error( 'Invalid arguments. Please enter vaild Key, ex. --key={key}' );
            }

            // Create progress bar.
		    $progress = \WP_CLI\Utils\make_progress_bar( 'Deleting key and its value from astra-settings ' . $option_key, 0 );
            
            $blog_ids = get_sites();
            foreach( $blog_ids as $b ) {
                switch_to_blog( $b->blog_id );
                // Delete astra-settings option one by one.
                astra_delete_option( $option_key );
                WP_CLI::log( sprintf( 'Option %s for Site - %s is deleted!', $option_key, $b->blog_id ) );
                restore_current_blog();
                $progress->tick();
            }
            
            $progress->finish();
           
            // Success message.
            WP_CLI::success( $option_key . ' astra-settings Option deleted!' );
        }
    }
    WP_CLI::add_command( 'delete-astra-option', 'DeleteAstraOption\Commands' );
}