Revert "setting to skip migration tests by default"

config/config.sample.php

@@ -1195,15 +1195,6 @@ $CONFIG = array(
  */
 'debug' => false,
 
-/**
- * Skips the migration test during upgrades
- *
- * If this is set to true the migration test are deactivated during upgrade.
- * This is only recommended in installations where upgrade tests are run in
- * advance with the same data on a test system.
- */
-'update.skip-migration-test' => false,
-
 /**
  * This entry is just here to show a warning in case somebody copied the sample
  * configuration. DO NOT ADD THIS SWITCH TO YOUR CONFIGURATION!

core/ajax/update.php

@@ -50,12 +50,6 @@ if (OC::checkUpgrade(false)) {
 			\OC::$server->getIntegrityCodeChecker(),
 			$logger
 	);
-
-	if ($config->getSystemValue('update.skip-migration-test', false)) {
-		$eventSource->send('success', (string)$l->t('Migration tests are skipped - "update.skip-migration-test" is activated in config.php'));
-		$updater->setSimulateStepEnabled(false);
-	}
-
 	$incompatibleApps = [];
 	$disabledThirdPartyApps = [];
 

core/command/upgrade.php

@@ -99,12 +99,6 @@ class Upgrade extends Command {
 		$updateStepEnabled = true;
 		$skip3rdPartyAppsDisable = false;
 
-		if ($this->config->getSystemValue('update.skip-migration-test', false)) {
-			$output->writeln(
-				'<info>"skip-migration-test" is activated via config.php</info>'
-			);
-			$simulateStepEnabled = false;
-		}
 		if ($input->getOption('skip-migration-test')) {
 			$simulateStepEnabled = false;
 		}