Re-aligned init files with Laravel default

Removed the custom init elements that we added in 2017 to
custom load the helpers file and instead load via composer.

Also removed laravel-microscope package due to not running due to
helpers file.

phpunit.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit backupGlobals="false"
          backupStaticAttributes="false"
-         bootstrap="bootstrap/init.php"
+         bootstrap="vendor/autoload.php"
          colors="true"
          convertErrorsToExceptions="true"
          convertNoticesToExceptions="true"