FIX Remove call to process::inheritEnvironmentVariables()

inheritEnvironmentVariables() was removed from the Symfony Process component in 5.0.0, as enviroment variables are always inherited.

src/Solr/Reindex/Handlers/SolrReindexImmediateHandler.php

@@ -104,7 +104,6 @@ class SolrReindexImmediateHandler extends SolrReindexBase
         // Set timeout from config. Process default is 60 seconds
         $process->setTimeout($this->config()->get('process_timeout'));
 
-        $process->inheritEnvironmentVariables();
         $process->run();
 
         $res = $process->getOutput();