Refactor namespaces

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

src/Util/HTTPSignature.php

@@ -5,14 +5,10 @@
  */
 namespace Friendica\Util;
 
-use Friendica\BaseObject;
 use Friendica\Core\Config;
 use Friendica\Core\Logger;
-use Friendica\Database\DBA;
 use Friendica\Model\User;
 use Friendica\Model\APContact;
-use Friendica\Protocol\ActivityPub;
-use Friendica\Util\DateTimeFormat;
 
 /**
  * @brief Implements HTTP Signatures per draft-cavage-http-signatures-07.

src/Util/LDSignature.php

@@ -3,9 +3,6 @@
 namespace Friendica\Util;
 
 use Friendica\Core\Logger;
-use Friendica\Util\JsonLD;
-use Friendica\Util\DateTimeFormat;
-use Friendica\Protocol\ActivityPub;
 use Friendica\Model\APContact;
 
 /**

src/Util/Proxy.php

@@ -2,11 +2,9 @@
 
 namespace Friendica\Util;
 
-use Friendica\BaseModule;
 use Friendica\BaseObject;
 use Friendica\Core\Config;
 use Friendica\Core\System;
-use Friendica\Util\Strings;
 
 /**
  * @brief Proxy utilities class

src/Util/Security.php

@@ -9,9 +9,6 @@ use Friendica\BaseObject;
 use Friendica\Database\DBA;
 use Friendica\Model\Contact;
 use Friendica\Model\Group;
-use Friendica\Core\L10n;
-use Friendica\Model\PermissionSet;
-use Friendica\Core\System;
 
 /**
  * Secures that User is allow to do requests

src/Util/Temporal.php

@@ -8,7 +8,6 @@ namespace Friendica\Util;
 
 use DateTime;
 use DateTimeZone;
-use Friendica\Core\Config;
 use Friendica\Core\L10n;
 use Friendica\Core\PConfig;
 use Friendica\Core\Renderer;