Remove print_r exit from CrawlComponent that had been introduced by accident, a=chris

diff --git a/src/controllers/components/CrawlComponent.php b/src/controllers/components/CrawlComponent.php
index 8d89e39d8..fbc3e85a8 100644
--- a/src/controllers/components/CrawlComponent.php
+++ b/src/controllers/components/CrawlComponent.php
@@ -689,7 +689,6 @@ class CrawlComponent extends Component implements CrawlConstants
            that it can pass them along in the case of a new archive
            crawl.
         */
-        print_r($machine_urls); exit();
         $crawl_params[self::CHANNEL] = empty($crawl_params[self::CHANNEL]) ?
             0 : $crawl_params[self::CHANNEL];
         $filename = C\CRAWL_DIR .