Issue #3460888: Remove unused variable

project_composer.drush.inc

@@ -62,7 +62,6 @@ function project_composer_drush_command() {
  */
 function drush_project_composer_process_project() {
   $args = func_get_args();
-  $provider_includes_to_rebuild = [];
 
   foreach ($args as $shortname) {
     drush_print("Processing package metadata for $shortname");