Revert "Changes to improve testing (#9608)" (#9937)

This reverts commit d1a0ccda46.

tests/OSModulesTest.php

@@ -60,7 +60,6 @@ class OSModulesTest extends DBTestCase
     {
         $this->requireSnmpsim();  // require snmpsim for tests
         global $snmpsim;
-        load_all_os(); // wiped out by application refresh
 
         try {
             $helper = new ModuleTestHelper($modules, $os, $variant);
@@ -113,6 +112,7 @@ class OSModulesTest extends DBTestCase
         }
     }
 
+
     public function dumpedDataProvider()
     {
         $modules = array();