Move ExpiredTokenException to the correct namespace

apps/oauth2/lib/Controller/OauthApiController.php

apps/oauth2/tests/Controller/OauthApiControllerTest.php

lib/composer/composer/autoload_classmap.php

lib/composer/composer/autoload_static.php

...ivate/Authentication/Exceptions/ExpiredTokenException.php

lib/private/Authentication/Token/DefaultTokenProvider.php

lib/private/Authentication/Token/IProvider.php

lib/private/Authentication/Token/Manager.php

lib/private/Authentication/Token/PublicKeyTokenProvider.php

tests/lib/Authentication/Token/DefaultTokenProviderTest.php

...s/lib/Authentication/Token/PublicKeyTokenProviderTest.php