Refactor namespaces

- Remove unused use statements
- Add required use statements
- Escape global classes

src/Core/Console/ArchiveContact.php

@@ -2,7 +2,6 @@
 
 namespace Friendica\Core\Console;
 
-use Friendica\App;
 use Friendica\Core\L10n;
 use Friendica\Database\DBA;
 use Friendica\Util\Strings;

src/Core/Console/AutomaticInstallation.php

@@ -7,8 +7,6 @@ use Friendica\BaseObject;
 use Friendica\Core\Config;
 use Friendica\Core\Installer;
 use Friendica\Core\Theme;
-use Friendica\Database\DBA;
-use Friendica\Database\DBStructure;
 use RuntimeException;
 
 class AutomaticInstallation extends Console