Merge pull request #12418 from owncloud/delete_previews

delete old previews

lib/private/repair.php

@@ -101,7 +101,7 @@ class Repair extends BasicEmitter {
 		//only 7.0.0 through 7.0.2 generated broken previews
 		$currentVersion = \OC::$server->getConfig()->getSystemValue('version');
 		if (version_compare($currentVersion, '7.0.0.0', '>=') &&
-			version_compare($currentVersion, '7.0.2.2', '<=')) {
+			version_compare($currentVersion, '7.0.3.4', '<=')) {
 			$steps[] = new \OC\Repair\Preview();
 		}